Which numerator-and-denominator operation creates an equivalent fraction?

Multiply or divide the numerator and denominator by the same nonzero number. The fraction's value stays unchanged.

What does data sufficiency ask you to determine?

Whether the information guarantees one answer. You usually don’t need to calculate that answer.

How do you form a passage's main idea?

Combine the passage's central topic with its main claim about that topic. The answer should cover the whole passage at the right level.

What does multiplying a decimal by 10ⁿ do when n is a positive integer?

It moves the decimal point n places to the right. Dividing by 10ⁿ moves it n places left.

What makes information sufficient for a value question?

It forces exactly one value for the target. Different values that satisfy all conditions make it insufficient.

How do you identify the passage's primary purpose?

Name what the author is doing with the topic: explaining, comparing, challenging, defending, or proposing. Keep content and action together.

How do you find p percent of a quantity q?

Compute (p/100) × q. Translate “of” as multiplication.

How can two valid cases prove insufficiency?

Make the cases produce different answers to the question. One clean counterexample pair is enough.

How do you determine a paragraph's role?

Connect the paragraph to what comes before and after it. Decide whether it introduces, supports, qualifies, contrasts, applies, or concludes the larger discussion.

A total of 45 is split in the ratio 2:3. What are the two parts?

18 and 27. The five ratio units are worth 45 ÷ 5 = 9 each.

Why can an integer restriction change sufficiency?

It removes noninteger possibilities. A range containing many real numbers may contain only one integer.

When is a product of signed factors negative?

Provided no factor is zero, an odd number of negative factors gives a negative product, while an even number gives a positive product. If any factor is zero, the product is zero.

How should two data-sufficiency statements be tested initially?

Test each statement independently against the stem. Do not carry information from one statement into the other.

What makes an integer greater than 1 prime?

It has exactly two positive divisors: 1 and itself.

What should you do first on a detail question?

Return to the relevant lines and read their local context. Memory tends to preserve the topic while blurring qualifications.

What is the divisibility rule for 2?

The last digit must be even: 0, 2, 4, 6, or 8.

How do you test whether a fact is relevant?

Connect it to the requested target. A true fact that does not narrow the target adds no decision value.

How far may a reading inference go beyond the text?

Only as far as the text strongly supports. Prefer the smallest justified step and reject claims needing outside knowledge.

Why is prime factorization useful in GMAT arithmetic?

It exposes divisibility, factors, greatest common factors, least common multiples, and perfect powers.

What must happen before quantities with different units are combined?

First confirm that their dimensions are compatible, then convert them to a common unit. Keep the unit attached through the calculation to catch mismatches.

How do you apply a passage principle to a new case?

Extract the principle's required conditions, then test whether the new case has them. Surface similarity isn't enough.

Which relationship connects distance, rate, and time?

Distance = rate × time. Rearrange only after the units are compatible.

How do you find a least common multiple from prime factorizations?

Take every prime that appears, using the largest exponent present.

How do you multiply powers with the same base?

Add the exponents: aᵐ × aⁿ = aᵐ⁺ⁿ.

How is a weighted average computed?

Divide the total weighted value by the total weight. For groups, use group size as the weight unless another weight is given.

What should a quick passage map record?

Each paragraph's role and major viewpoint, plus the passage's overall direction. Record structure, not a sentence-by-sentence summary.

What does the principal square root symbol √x return?

For real x ≥ 0, it is the nonnegative number whose square is x. For example, √9 = 3, not ±3.

When can bounds replace exact arithmetic?

When the bounds separate the viable decisions. Stop once every value in the interval leads to the same choice.

How do you keep viewpoints separate?

Attach each claim to its speaker: author, critic, researcher, or group. Track agreement, disagreement, and any later qualification.

How do “sum,” “product,” and “quotient” translate into algebra?

They mean addition, multiplication, and division, respectively.

How do you reduce a fraction to lowest terms?

Divide the numerator and denominator by their greatest common factor.

What evidence should determine the author's tone?

Evaluative words, qualifications, and the treatment of competing views. Topic alone doesn't establish approval, concern, or skepticism.

When should rounding usually occur?

At the end, unless estimation already settles the decision. Early rounding can move a result across a cutoff.

How do you convert a terminating decimal to a fraction?

Write the digits over the matching power of 10, then reduce. For example, 0.375 = 375/1000 = 3/8.

When should you stop calculating in a sufficiency problem?

As soon as uniqueness is proved or disproved. More arithmetic cannot change the sufficiency decision.

How do you spot an out-of-scope answer?

It introduces a person, period, cause, or consequence the passage doesn't address. Being reasonable doesn't make it textually supported.

What is the percent-change formula?

For original > 0, percent change = (new − original) / original × 100%. Percent change from zero is undefined; negative baselines require context-specific interpretation.

What makes information sufficient for a yes-or-no question?

It forces the same yes-or-no answer in every valid case. The underlying value may still vary.

What preserves a ratio when its quantities are scaled?

Multiplying or dividing both terms by the same nonzero factor preserves the ratio.

How do you reject a main-idea answer with the wrong scope?

Compare it with the whole passage. A detail-only answer is too narrow; a claim extending beyond the passage is too broad.

Why should you track whether a variable is positive, negative, or zero?

Sign controls valid cases and operations. Squaring can hide sign, and division requires a nonzero denominator.

How do you simplify subtraction of a negative number?

Change it to addition: a − (−b) = a + b.

Whose purpose matters in a primary-purpose question?

The passage author's purpose. A theory or researcher may be described at length without representing what the author ultimately wants to do.

When is the on-screen calculator most useful?

For tedious arithmetic after the setup is clear. It does not replace choosing the right relationship or denominator.

In Data Sufficiency, what stem information applies when testing either statement?

Everything in the question stem. Stem facts remain active for each statement and for the combination.

What is the divisibility rule for 3?

The sum of the digits must be divisible by 3.

What does a transition paragraph often do?

It closes one line of thought and sets up the next. Its role depends on both sides, not only on its first sentence.

When is a proxy measure useful?

When evidence shows it reliably tracks the target for the intended decision. Correlation may support prediction, but it proves neither causation nor suitability on its own.

How do you find a greatest common factor from prime factorizations?

Take each shared prime to the smaller exponent.

What is the arithmetic mean?

The sum of the values divided by the number of values.

What units should a rate have?

One quantity per another, such as kilometers per hour. The denominator tells you what the rate is measured against.

GMAT Flashcards: Quant, Verbal & Data Insights Decisions

300 original flashcards for current-format GMAT Quant, Verbal, and Data Insights concepts, cues, and reusable decisions.

Autors Open Study Contributor

Par šo kavu

GMAT Flashcards: Quant, Verbal & Data Insights Decisions

Build quick recall for the current GMAT with 300 original cards across Quantitative Reasoning, Verbal Reasoning, and Data Insights. The deck focuses on reusable concepts and decisions; full-length practice belongs in official or properly licensed question banks.

What the cards map

Quant maps numeric forms, terms, rules, and formulas to their meaning, conditions, or use. Short scenarios ask for the operation, equation, or answer check that fits.
Verbal maps passage and argument cues to purpose, scope, evidence, inference, reasoning flaws, and evaluation moves.
Data Insights maps targets, constraints, source and display cues, metrics, and evidence states to the interpretation or decision they support. It covers Data Sufficiency, Multi-Source Reasoning, Table Analysis, Graphics Interpretation, and Two-Part Analysis.

Learning order

The mixed sequence keeps all three sections in rotation. Quant foundations come before algebra, models, and strategy checks; passage reading comes before argument evaluation; shared data literacy comes before the five Data Insights formats. Closely related prompts are spaced apart so one card does not cue the next.

Current-format boundary

This deck has no geometry lessons or formula drills, Sentence Correction, or the retired Integrated Reasoning section. It also excludes timing, scoring, test-center policy, full passages, large data sets, and response-pattern tricks.

Every card is an original compact concept or decision prompt. No official or competitor questions, answer choices, explanations, mark schemes, curriculum text, logos, or trade dress were copied or adapted. See the official GMAT exam content and Data Insights preparation guidance for the current exam boundary.

This is an independent, unofficial study resource. It is not affiliated with, endorsed by, or sponsored by the Graduate Management Admission Council (GMAC). GMAT is used only to identify the exam.

Kartītes šajā kavā

1. kartīte
Jautājums
Which numerator-and-denominator operation creates an equivalent fraction?
Atbilde
Multiply or divide the numerator and denominator by the same nonzero number. The fraction's value stays unchanged.
2. kartīte
Jautājums
What does data sufficiency ask you to determine?
Atbilde
Whether the information guarantees one answer. You usually don’t need to calculate that answer.
3. kartīte
Jautājums
How do you form a passage's main idea?
Atbilde
Combine the passage's central topic with its main claim about that topic. The answer should cover the whole passage at the right level.
4. kartīte
Jautājums
What does multiplying a decimal by 10ⁿ do when n is a positive integer?
Atbilde
It moves the decimal point n places to the right. Dividing by 10ⁿ moves it n places left.
5. kartīte
Jautājums
What makes information sufficient for a value question?
Atbilde
It forces exactly one value for the target. Different values that satisfy all conditions make it insufficient.
6. kartīte
Jautājums
How do you identify the passage's primary purpose?
Atbilde
Name what the author is doing with the topic: explaining, comparing, challenging, defending, or proposing. Keep content and action together.
7. kartīte
Jautājums
How do you find p percent of a quantity q?
Atbilde
Compute (p/100) × q. Translate “of” as multiplication.
8. kartīte
Jautājums
How can two valid cases prove insufficiency?
Atbilde
Make the cases produce different answers to the question. One clean counterexample pair is enough.
9. kartīte
Jautājums
How do you determine a paragraph's role?
Atbilde
Connect the paragraph to what comes before and after it. Decide whether it introduces, supports, qualifies, contrasts, applies, or concludes the larger discussion.
10. kartīte
Jautājums
A total of 45 is split in the ratio 2:3. What are the two parts?
Atbilde
18 and 27. The five ratio units are worth 45 ÷ 5 = 9 each.
11. kartīte
Jautājums
Why can an integer restriction change sufficiency?
Atbilde
It removes noninteger possibilities. A range containing many real numbers may contain only one integer.
12. kartīte
Jautājums
When is a product of signed factors negative?
Atbilde
Provided no factor is zero, an odd number of negative factors gives a negative product, while an even number gives a positive product. If any factor is zero, the product is zero.
13. kartīte
Jautājums
How should two data-sufficiency statements be tested initially?
Atbilde
Test each statement independently against the stem. Do not carry information from one statement into the other.
14. kartīte
Jautājums
What makes an integer greater than 1 prime?
Atbilde
It has exactly two positive divisors: 1 and itself.
15. kartīte
Jautājums
What should you do first on a detail question?
Atbilde
Return to the relevant lines and read their local context. Memory tends to preserve the topic while blurring qualifications.
16. kartīte
Jautājums
What is the divisibility rule for 2?
Atbilde
The last digit must be even: 0, 2, 4, 6, or 8.
17. kartīte
Jautājums
How do you test whether a fact is relevant?
Atbilde
Connect it to the requested target. A true fact that does not narrow the target adds no decision value.
18. kartīte
Jautājums
How far may a reading inference go beyond the text?
Atbilde
Only as far as the text strongly supports. Prefer the smallest justified step and reject claims needing outside knowledge.
19. kartīte
Jautājums
Why is prime factorization useful in GMAT arithmetic?
Atbilde
It exposes divisibility, factors, greatest common factors, least common multiples, and perfect powers.
20. kartīte
Jautājums
What must happen before quantities with different units are combined?
Atbilde
First confirm that their dimensions are compatible, then convert them to a common unit. Keep the unit attached through the calculation to catch mismatches.
21. kartīte
Jautājums
How do you apply a passage principle to a new case?
Atbilde
Extract the principle's required conditions, then test whether the new case has them. Surface similarity isn't enough.
22. kartīte
Jautājums
Which relationship connects distance, rate, and time?
Atbilde
Distance = rate × time. Rearrange only after the units are compatible.
23. kartīte
Jautājums
How do you find a least common multiple from prime factorizations?
Atbilde
Take every prime that appears, using the largest exponent present.
24. kartīte
Jautājums
How do you multiply powers with the same base?
Atbilde
Add the exponents: aᵐ × aⁿ = aᵐ⁺ⁿ.
25. kartīte
Jautājums
How is a weighted average computed?
Atbilde
Divide the total weighted value by the total weight. For groups, use group size as the weight unless another weight is given.
26. kartīte
Jautājums
What should a quick passage map record?
Atbilde
Each paragraph's role and major viewpoint, plus the passage's overall direction. Record structure, not a sentence-by-sentence summary.
27. kartīte
Jautājums
What does the principal square root symbol √x return?
Atbilde
For real x ≥ 0, it is the nonnegative number whose square is x. For example, √9 = 3, not ±3.
28. kartīte
Jautājums
When can bounds replace exact arithmetic?
Atbilde
When the bounds separate the viable decisions. Stop once every value in the interval leads to the same choice.
29. kartīte
Jautājums
How do you keep viewpoints separate?
Atbilde
Attach each claim to its speaker: author, critic, researcher, or group. Track agreement, disagreement, and any later qualification.
30. kartīte
Jautājums
How do “sum,” “product,” and “quotient” translate into algebra?
Atbilde
They mean addition, multiplication, and division, respectively.
31. kartīte
Jautājums
How do you reduce a fraction to lowest terms?
Atbilde
Divide the numerator and denominator by their greatest common factor.
32. kartīte
Jautājums
What evidence should determine the author's tone?
Atbilde
Evaluative words, qualifications, and the treatment of competing views. Topic alone doesn't establish approval, concern, or skepticism.
33. kartīte
Jautājums
When should rounding usually occur?
Atbilde
At the end, unless estimation already settles the decision. Early rounding can move a result across a cutoff.
34. kartīte
Jautājums
How do you convert a terminating decimal to a fraction?
Atbilde
Write the digits over the matching power of 10, then reduce. For example, 0.375 = 375/1000 = 3/8.
35. kartīte
Jautājums
When should you stop calculating in a sufficiency problem?
Atbilde
As soon as uniqueness is proved or disproved. More arithmetic cannot change the sufficiency decision.
36. kartīte
Jautājums
How do you spot an out-of-scope answer?
Atbilde
It introduces a person, period, cause, or consequence the passage doesn't address. Being reasonable doesn't make it textually supported.
37. kartīte
Jautājums
What is the percent-change formula?
Atbilde
For original > 0, percent change = (new − original) / original × 100%. Percent change from zero is undefined; negative baselines require context-specific interpretation.
38. kartīte
Jautājums
What makes information sufficient for a yes-or-no question?
Atbilde
It forces the same yes-or-no answer in every valid case. The underlying value may still vary.
39. kartīte
Jautājums
What preserves a ratio when its quantities are scaled?
Atbilde
Multiplying or dividing both terms by the same nonzero factor preserves the ratio.
40. kartīte
Jautājums
How do you reject a main-idea answer with the wrong scope?
Atbilde
Compare it with the whole passage. A detail-only answer is too narrow; a claim extending beyond the passage is too broad.
41. kartīte
Jautājums
Why should you track whether a variable is positive, negative, or zero?
Atbilde
Sign controls valid cases and operations. Squaring can hide sign, and division requires a nonzero denominator.
42. kartīte
Jautājums
How do you simplify subtraction of a negative number?
Atbilde
Change it to addition: a − (−b) = a + b.
43. kartīte
Jautājums
Whose purpose matters in a primary-purpose question?
Atbilde
The passage author's purpose. A theory or researcher may be described at length without representing what the author ultimately wants to do.
44. kartīte
Jautājums
When is the on-screen calculator most useful?
Atbilde
For tedious arithmetic after the setup is clear. It does not replace choosing the right relationship or denominator.
45. kartīte
Jautājums
In Data Sufficiency, what stem information applies when testing either statement?
Atbilde
Everything in the question stem. Stem facts remain active for each statement and for the combination.
46. kartīte
Jautājums
What is the divisibility rule for 3?
Atbilde
The sum of the digits must be divisible by 3.
47. kartīte
Jautājums
What does a transition paragraph often do?
Atbilde
It closes one line of thought and sets up the next. Its role depends on both sides, not only on its first sentence.
48. kartīte
Jautājums
When is a proxy measure useful?
Atbilde
When evidence shows it reliably tracks the target for the intended decision. Correlation may support prediction, but it proves neither causation nor suitability on its own.
49. kartīte
Jautājums
How do you find a greatest common factor from prime factorizations?
Atbilde
Take each shared prime to the smaller exponent.
50. kartīte
Jautājums
What is the arithmetic mean?
Atbilde
The sum of the values divided by the number of values.
51. kartīte
Jautājums
What units should a rate have?
Atbilde
One quantity per another, such as kilometers per hour. The denominator tells you what the rate is measured against.
52. kartīte
Jautājums
How do you divide powers with the same nonzero base?
Atbilde
Subtract the exponents: aᵐ ÷ aⁿ = aᵐ⁻ⁿ.
53. kartīte
Jautājums
What makes a paraphrase faithful to a passage detail?
Atbilde
It preserves the original meaning, scope, and certainty in different words. Shared keywords alone don't make it accurate.
54. kartīte
Jautājums
How do you recover a total from an average?
Atbilde
Total = average × number of values.
55. kartīte
Jautājums
How do you choose between two plausible reading inferences?
Atbilde
Choose the one with the tighter textual chain and fewer assumptions. Plausibility in the real world is secondary.
56. kartīte
Jautājums
What quick check can catch a calculator-entry error?
Atbilde
Estimate the order of magnitude and direction first. An exact result far outside that range deserves another look.
57. kartīte
Jautājums
How do you simplify a square root with a perfect-square factor?
Atbilde
Factor out the perfect square. For example, √72 = √(36 × 2) = 6√2.
58. kartīte
Jautājums
What makes a new example parallel to one in the passage?
Atbilde
The same logical relationship. Match cause, contrast, exception, or function rather than shared subject matter.
59. kartīte
Jautājums
When can work rates be added?
Atbilde
Add the stated constant rates when the workers operate simultaneously without interfering with one another. At 1/4 and 1/6 job per hour, together they complete 5/12 job per hour.
60. kartīte
Jautājums
What is the denominator in a percent comparison?
Atbilde
The stated reference value. “A as a percent of B” means A divided by B, then multiplied by 100.
61. kartīte
Jautājums
How do you translate “5 less than x”?
Atbilde
x − 5. The phrase “less than” reverses the spoken order.
62. kartīte
Jautājums
In Data Sufficiency, what should you check before testing values?
Atbilde
The full domain. Honor stated restrictions and implicit ones such as positive lengths or nonzero divisors before judging sufficiency.
63. kartīte
Jautājums
How do you add fractions with different denominators?
Atbilde
Rewrite them with a common denominator, then add the numerators. For example, 2/3 + 1/4 = 8/12 + 3/12 = 11/12.
64. kartīte
Jautājums
How do you distinguish description from argument in a passage?
Atbilde
Description presents what happened or what a view says; argument gives reasons to accept, reject, or revise a claim.
65. kartīte
Jautājums
How should you compare decimals with different lengths?
Atbilde
Append trailing zeros and compare place by place. For example, compare 0.47 with 0.4700, which are equal.
66. kartīte
Jautājums
How should combined statements be evaluated?
Atbilde
Intersect their constraints with the stem. The combination is sufficient only if every remaining case gives one answer.
67. kartīte
Jautājums
How do you find common ground between two viewpoints?
Atbilde
Look for the narrow claim both accept, even if they disagree about its cause, importance, or implications.
68. kartīte
Jautājums
How do you solve a proportion such as a/b = c/d?
Atbilde
Cross-multiply to get ad = bc, provided b and d are nonzero.
69. kartīte
Jautājums
How is average speed computed?
Atbilde
Total distance divided by total time. It is not usually the simple mean of the segment speeds.
70. kartīte
Jautājums
What does |x| represent?
Atbilde
The nonnegative distance from x to 0 on the number line.
71. kartīte
Jautājums
Why are strongly emotional tone descriptions often wrong?
Atbilde
They overstate measured academic prose. Match the answer's intensity to the author's actual language.
72. kartīte
Jautājums
What is the divisibility rule for 4?
Atbilde
The number formed by the last two digits must be divisible by 4.
73. kartīte
Jautājums
Can the ordinary percent-change formula be applied directly when the original value is zero or negative?
Atbilde
No. The ordinary GMAT rule assumes original > 0. Change from zero is undefined, and a negative baseline requires context-specific interpretation.
74. kartīte
Jautājums
Why can a true statement still be a wrong answer?
Atbilde
It may not answer the question asked. Check the task—main idea, detail, inference, role, or purpose—before checking truth.
75. kartīte
Jautājums
When must a weighted average lie between its component values?
Atbilde
When every weight is nonnegative and the total weight is positive. The average then lies between the smallest and largest component values.
76. kartīte
Jautājums
How do you express an integer n divided by d with remainder r?
Atbilde
n = dq + r, where q is an integer and 0 ≤ r < d for positive d.
77. kartīte
Jautājums
What does an inequality usually provide?
Atbilde
A range, not a unique value. It can still be sufficient if the question asks whether a threshold is crossed.
78. kartīte
Jautājums
How should you handle an EXCEPT detail prompt?
Atbilde
Verify four statements against the passage and select the one that isn't supported. Keep the reversed task visible while checking each choice.
79. kartīte
Jautājums
How should you set up a unit conversion?
Atbilde
Multiply by a conversion factor equal to 1, placing units so the unwanted unit cancels.
80. kartīte
Jautājums
Can two individually insufficient statements remain insufficient together?
Atbilde
Yes. They may repeat the same limitation or still leave multiple valid answers.
81. kartīte
Jautājums
For a positive base, how do you simplify a power raised to another power?
Atbilde
Multiply the exponents: (aᵐ)ⁿ = a^(mn).
82. kartīte
Jautājums
When can you infer that an author accepts a claim?
Atbilde
When the author endorses it directly or relies on it without distancing language. Merely reporting another person's view isn't endorsement.
83. kartīte
Jautājums
How should successive percentage changes be combined?
Atbilde
Multiply their factors. A 10% rise followed by a 10% fall gives 1.10 × 0.90 = 0.99, a 1% net fall.
84. kartīte
Jautājums
What are compatible numbers in estimation?
Atbilde
Nearby numbers chosen to make mental arithmetic easy, such as 203 ÷ 9.9 ≈ 200 ÷ 10 = 20.
85. kartīte
Jautājums
Which constraints are easy to overlook in a word problem?
Atbilde
Countability, positivity, distinctness, and capacity limits. Translate each noun and rule into a usable constraint.
86. kartīte
Jautājums
How do you state the exact disagreement between two viewpoints?
Atbilde
Identify one claim that one side accepts and the other rejects. Don't substitute a topic that only one side discusses.
87. kartīte
Jautājums
How do you represent three consecutive integers?
Atbilde
n, n + 1, and n + 2 for an integer n.
88. kartīte
Jautājums
How do percentage points differ from percent change?
Atbilde
Percentage points are the direct difference between percentages. Moving from 20% to 25% is 5 points and a 25% relative increase.
89. kartīte
Jautājums
What is a reversed-relationship trap?
Atbilde
It swaps cause and effect, support and conclusion, or the positions of two viewpoints while reusing familiar passage language.
90. kartīte
Jautājums
How do you multiply two fractions?
Atbilde
Multiply numerator by numerator and denominator by denominator, canceling common factors when convenient.
91. kartīte
Jautājums
How do direct and inverse proportion differ?
Atbilde
Direct: y = kx; inverse: y = k/x for x ≠ 0.
92. kartīte
Jautājums
How do you recover an original value after a percentage increase?
Atbilde
Divide the new value by the growth factor. After a 20% increase, original = new ÷ 1.20.
93. kartīte
Jautājums
When should absolute wording raise suspicion?
Atbilde
When the passage is qualified. Words such as always, never, entirely, and impossible require equally strong textual support.
94. kartīte
Jautājums
What should you identify first in Data Sufficiency?
Atbilde
The exact target and answer type. Decide whether the stem asks for a value, a comparison, or a yes-or-no result.
95. kartīte
Jautājums
What ending makes an integer divisible by 5 or by 10?
Atbilde
A last digit of 0 or 5 gives divisibility by 5; a last digit of 0 gives divisibility by 10.
96. kartīte
Jautājums
How should a Data Sufficiency condition be handled?
Atbilde
Translate it into a precise constraint before testing sufficiency. Keep it separate from the conclusion you want.
97. kartīte
Jautājums
How do you reject a half-right answer?
Atbilde
Test every part of it. One accurate clause can't rescue a second clause that distorts the passage or exceeds its scope.
98. kartīte
Jautājums
When you convert a positive measurement to a smaller linear unit, what happens to its numerical value?
Atbilde
It increases. Multiply by the number of smaller units in one larger unit.
99. kartīte
Jautājums
DS example: Is x > 5? Statement: x > 3. Is the statement sufficient?
Atbilde
No. Both x = 4 and x = 6 satisfy the statement, but they answer the stem differently.
100. kartīte
Jautājums
What is a⁰ when a is nonzero?
Atbilde
The nonzero-base condition matters because 0⁰ is not assigned this rule.
101. kartīte
Jautājums
Which claim is the argument trying to establish?
Atbilde
The main conclusion. Find the claim supported by the other statements, then check that it answers the argument's central issue.
102. kartīte
Jautājums
When should the two statements be combined?
Atbilde
When neither statement is sufficient alone. Use both constraints at once and test the remaining possibilities.
103. kartīte
Jautājums
A positive number rounds to 8.2 to the nearest tenth. What interval contains it?
Atbilde
8.15 ≤ x < 8.25. The lower endpoint rounds up to 8.2; the upper endpoint rounds to 8.3.
104. kartīte
Jautājums
What should you check when the conclusion changes populations?
Atbilde
Whether the evidence applies to the new population. Results from volunteers, specialists, or one age group may not transfer to everyone.
105. kartīte
Jautājums
How should test values be chosen in Data Sufficiency?
Atbilde
Choose valid values that probe boundaries, signs, and distinct outcomes. Random easy values can miss the deciding case.
106. kartīte
Jautājums
How do you translate “A is 30% more than B”?
Atbilde
A = 1.30B. The percentage is based on B.
107. kartīte
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When can one equation involving two variables be sufficient for a target?
Atbilde
When every valid solution gives the same target value, even if neither variable is unique. For example, x + y = 10 is sufficient to determine x + y.
108. kartīte
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What does a correlation establish by itself?
Atbilde
Only that two things vary together. It doesn't establish which one causes the other or whether a third factor causes both.
109. kartīte
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How do you divide by a nonzero fraction?
Atbilde
Multiply by its reciprocal. For example, 3/5 ÷ 2/7 = 3/5 × 7/2.
110. kartīte
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Why is a ratio often insufficient for an absolute value?
Atbilde
A ratio fixes relative size but usually leaves the scale free. Many proportional pairs can share the same ratio.
111. kartīte
Jautājums
What is the divisibility rule for 9?
Atbilde
The sum of the digits must be divisible by 9.
112. kartīte
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What matters most when applying a sample result to a population?
Atbilde
Representativeness. The sample must resemble the target population on traits that could affect the result.
113. kartīte
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What should you check after solving a squared equation?
Atbilde
Check every allowed root. If positive and negative roots produce different target answers, the information is insufficient.
114. kartīte
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What does a negative exponent mean?
Atbilde
It takes the reciprocal: a⁻ⁿ = 1/aⁿ for nonzero a.
115. kartīte
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Which baseline makes a comparison informative?
Atbilde
The baseline relevant to the claim. Compare the outcome with what would otherwise have happened, not merely with an unrelated earlier figure.
116. kartīte
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What risk appears when an equation factors into multiple branches?
Atbilde
Each branch may create valid cases. Test all branches against the stem before deciding sufficiency.
117. kartīte
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How can you compare two positive fractions quickly?
Atbilde
Compare their cross-products. For a/b and c/d with positive denominators, compare ad with bc.
118. kartīte
Jautājums
What may be assumed from a Data Sufficiency diagram?
Atbilde
Only marked or stated facts. Do not infer scale, equality, perpendicularity, or midpoint status from appearance.
119. kartīte
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What multiplier represents a p percent increase or decrease?
Atbilde
Use 1 + p/100 for an increase and 1 − p/100 for a decrease.
120. kartīte
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Which statements count as evidence?
Atbilde
The statements offered as reasons to accept another claim. Evidence may be factual or assumed for the argument, even if it isn't proven in real life.
121. kartīte
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Can a mean determine an individual observation?
Atbilde
Not by itself. A mean fixes the total, but different sets can have that total unless more constraints apply.
122. kartīte
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What weakens a move from past evidence to a present claim?
Atbilde
A relevant change over time. New technology, prices, rules, or behavior can make the earlier evidence a poor guide.
123. kartīte
Jautājums
A value becomes 96 after a 20% increase. What was the original value?
Atbilde
Divide the final value by the growth multiplier: 96 ÷ 1.2 = 80.
124. kartīte
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How do extreme valid cases help in Data Sufficiency?
Atbilde
They expose whether the target can change. Test the smallest, largest, or boundary cases allowed by the conditions.
125. kartīte
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How do you test for reverse causation?
Atbilde
Ask whether the alleged effect could instead cause the alleged cause. Productive teams may meet more because they are productive, not the reverse.
126. kartīte
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Must a sufficient statement make every variable unique?
Atbilde
No. It only needs to make the requested target unique, even if other variables remain undetermined.
127. kartīte
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A price rises 20% and then falls 20%. Does it return to its original value?
Atbilde
No. The multipliers give 1.20 × 0.80 = 0.96, so the final price is 4% below the original.
128. kartīte
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Why can a voluntary survey be biased?
Atbilde
People who choose to respond may differ from those who don't. Strong opinions or extra interest can distort the sample.
129. kartīte
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How do you expand a(b + c)?
Atbilde
ab + ac. The outside factor multiplies every term inside the parentheses.
130. kartīte
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What should the final Data Sufficiency decision describe?
Atbilde
Which information set guarantees an answer. It should not report the target’s numerical value.
131. kartīte
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What is the goal when solving a linear equation?
Atbilde
Isolate the variable by applying equivalent operations to both sides.
132. kartīte
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DS example: Is integer n even? Statement: n = 7. Is the statement sufficient?
Atbilde
Yes. It guarantees one answer—no. A statement can be sufficient even when that answer is negative.
133. kartīte
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When must an inequality sign reverse?
Atbilde
When both sides are multiplied or divided by a negative number.
134. kartīte
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What must be checked before comparing two groups?
Atbilde
Whether they differ in other relevant ways. Age, experience, starting level, or incentives may explain the outcome instead.
135. kartīte
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When is substitution preferable to elimination in a two-equation system?
Atbilde
Use substitution when one variable is already isolated or easy to isolate; use elimination when coefficients cancel easily.
136. kartīte
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What should you build before analyzing Multi-Source Reasoning material?
Atbilde
A quick source map. Note what each tab or document contains, who produced it, and the relevant date or scope.
137. kartīte
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How do you separate background from evidence?
Atbilde
Ask whether the statement supports a claim. Background sets context; evidence does logical work in moving the argument toward a conclusion.
138. kartīte
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Which algebraic terms can be combined?
Atbilde
Terms with the same variable part and exponents. For example, 3x² and −5x² combine, but 3x² and 3x do not.
139. kartīte
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When should you read the Multi-Source Reasoning question?
Atbilde
Before a deep read of every source. The question tells you which details deserve attention.
140. kartīte
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What is a reliable first step for an equation containing several fractions?
Atbilde
Multiply every term by the least common denominator, then solve the simpler equation.
141. kartīte
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Why does source provenance matter?
Atbilde
It defines what a claim can support. An internal forecast and an audited result do not carry the same evidentiary weight.
142. kartīte
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What should you test when evidence comes from a different setting?
Atbilde
Whether the settings differ in a way that affects the result. A finding from one market, school, or climate may not carry over unchanged.
143. kartīte
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What does an “and” compound inequality require?
Atbilde
The overlap of both solution sets. A value must satisfy both conditions.
144. kartīte
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What should you compare before combining claims from two sources?
Atbilde
Their population, period, units, and definitions. Matching labels can hide different scopes.
145. kartīte
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How can a third factor undermine a causal claim?
Atbilde
It may explain both events, so their correlation no longer establishes a direct causal link by itself. Hot weather can raise both cold-drink sales and pool attendance.
146. kartīte
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What do one, zero, or infinitely many solutions mean for two linear equations in two variables?
Atbilde
The lines intersect once, are parallel and distinct, or are the same line, respectively.
147. kartīte
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How should records from separate sources be linked?
Atbilde
Use a shared key with the same meaning in both sources, such as product code and month. Do not join on a vague label alone.
148. kartīte
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How do you factor 6x + 9?
Atbilde
3(2x + 3). Pull out the greatest common factor.
149. kartīte
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When does nonresponse threaten a survey result?
Atbilde
When nonrespondents may answer differently from respondents. A high response count doesn't fix a systematic missing group.
150. kartīte
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What is the first step when two sources seem inconsistent?
Atbilde
Compare definitions, dates, units, and aggregation levels. Many apparent conflicts come from mismatched frames.
300 kartīšu
GMAT Flashcards: Quant, Verbal & Data Insights Decisions
Mācies šo kavu bez maksas
Atvērsies Nibomo, lai vari sākt mācīties.
151. kartīte
Jautājums
When can you use the zero-product property?
Atbilde
After rewriting a product equal to zero. If (x − 2)(x + 5) = 0, then x = 2 or x = −5.
152. kartīte
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How does an inference differ from a stated fact?
Atbilde
A fact appears directly in a source; an inference must follow from the sources without an extra assumption.
153. kartīte
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Does a higher percentage by itself prove a higher count?
Atbilde
No. The underlying totals matter. Twenty percent of 1,000 is more than fifty percent of 100.
154. kartīte
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What does an “or” compound inequality require?
Atbilde
The union of the solution sets. A value may satisfy either condition or both.
155. kartīte
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What does a blank or omitted value establish?
Atbilde
Only that the value is not provided. It does not establish zero, no change, or failure.
156. kartīte
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How do you recognize an intermediate conclusion?
Atbilde
It is supported by one claim and supports another. It acts as both a conclusion and a premise in the same argument.
157. kartīte
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What should you do before writing equations for a two-quantity word problem?
Atbilde
Define each variable with its unit, then translate one independent relationship per equation.
158. kartīte
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Why should cross-source events be placed in time order?
Atbilde
Sequence separates prior conditions from later outcomes and prevents using future information as an earlier cause.
159. kartīte
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When should candidate solutions be checked in the original equation?
Atbilde
Always after a step that may introduce solutions, especially squaring both sides or clearing variable denominators.
160. kartīte
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How can switching from one measured outcome to another create a gap?
Atbilde
Evidence about one metric may not support a conclusion about another. More website visits, for example, don't by themselves mean more sales.
161. kartīte
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What makes a source relevant to a claim?
Atbilde
It supplies evidence for a required link in the claim. Related background alone is not enough.
162. kartīte
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How do you solve a factored polynomial inequality reliably?
Atbilde
Find the zeros, split the number line into intervals, and test each interval's sign. Include a zero only when equality is allowed.
163. kartīte
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Does happening first prove causation?
Atbilde
No. The timing may fit a causal story, but coincidence or another cause can still explain the later event.
164. kartīte
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How can you spot an unsupported cross-source conclusion?
Atbilde
Identify the bridge between evidence and conclusion. If the sources never establish that bridge, the conclusion needs an assumption.
165. kartīte
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What do 0 = 0 and 0 = 5 mean after simplifying an equation?
Atbilde
0 = 0 means every allowed value is a solution; 0 = 5 means there is no solution.
166. kartīte
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What should you verify before comparing figures from different sources?
Atbilde
Common units and denominators. Convert first, then compare the same quantity on the same basis.
167. kartīte
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How do you interpret |x − a| < r when r is positive?
Atbilde
x is within r units of a: a − r < x < a + r.
168. kartīte
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What can a larger sample improve?
Atbilde
Precision, if the sampling method is sound. A huge biased sample can still give a confidently wrong picture of the population.
169. kartīte
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How should a cross-source recommendation be evaluated?
Atbilde
Apply the stated decision rule to the combined evidence. Do not substitute a personal preference for the rule.
170. kartīte
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If a worker finishes one job in t hours, what is the worker's hourly rate?
Atbilde
1/t of the job per hour.
171. kartīte
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What can an average hide?
Atbilde
The distribution. Two groups can share an average while differing sharply in range, concentration, or the number of extreme values.
172. kartīte
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What should you confirm before submitting a Multi-Source Reasoning answer?
Atbilde
That every required part is supported by the correct source and scope. One unsupported component can invalidate the whole decision.
173. kartīte
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How do you find the amount of a pure component in a mixture?
Atbilde
Concentration × total mixture amount. A 30% solution with volume 20 contains 0.30 × 20 = 6 units of the component.
174. kartīte
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What role does a concession usually play?
Atbilde
It acknowledges a point that weighs against the conclusion, then answers that point or limits its relevance. Don't mistake the conceded claim for the argument's main conclusion.
175. kartīte
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When can an apparent cross-source discrepancy be resolved?
Atbilde
When a stated difference in scope or method explains both figures. If no bridge is given, keep the conflict open.
176. kartīte
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What is the two-set overlap formula?
Atbilde
In A or B = in A + in B − in both. Subtract the overlap because it was counted twice.
177. kartīte
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What should you identify first in Table Analysis?
Atbilde
The row unit, column definitions, and any notes. This establishes what one record and each value represent.
178. kartīte
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What is the fundamental counting principle?
Atbilde
Multiply the choices at successive stages when each stage has a fixed number of available choices.
179. kartīte
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Why distinguish relative change from absolute change?
Atbilde
Relative change is the percentage change; absolute change is the amount added or lost. A 50% rise from 2 adds 1, while a 10% rise from 1,000 adds 100.
180. kartīte
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How should a table filter be translated?
Atbilde
Turn it into an exact inclusion rule. Apply every condition before counting or comparing rows.
181. kartīte
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For equally likely outcomes, what is the basic probability formula?
Atbilde
Favorable outcomes divided by total possible outcomes.
182. kartīte
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What makes a proposed causal mechanism useful?
Atbilde
It explains how the cause could produce the effect. A plausible, evidence-backed mechanism strengthens the causal link.
183. kartīte
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How do you find the median?
Atbilde
Order the values and take the middle value; for an even count, average the two middle values.
184. kartīte
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How should numeric values be sorted?
Atbilde
By numerical value, not digit order. For example, 12 comes after 9 in ascending order.
185. kartīte
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What is missed when evidence includes only successful cases?
Atbilde
The failures. Studying only surviving firms can make a strategy look safer or more effective than it is.
186. kartīte
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Two machines have stated constant rates of 1/3 and 1/5 job per hour and operate simultaneously without interference. May their rates be added?
Atbilde
Yes. The stated rates are constant and the machines do not interfere, so their combined rate is 1/3 + 1/5 = 8/15 job per hour.
187. kartīte
Jautājums
How should a table ratio be built when filters are involved?
Atbilde
Derive the numerator and denominator separately from the question, then apply each filter only where it is relevant. Do not automatically filter both quantities or default to all rows.
188. kartīte
Jautājums
What quantity is conserved when two solutions are mixed without loss?
Atbilde
The amount of the pure component. Set the sum of the starting component amounts equal to the final component amount.
189. kartīte
Jautājums
When may table rows be added directly?
Atbilde
Only when they are disjoint parts of the same measure and use compatible units. Overlapping groups would be double-counted.
190. kartīte
Jautājums
What does n! mean for a positive integer n?
Atbilde
The product of the positive integers from 1 through n.
191. kartīte
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Where is the argument's logical gap?
Atbilde
Between the evidence and the conclusion. State what must connect them without merely repeating either side.
192. kartīte
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How do you find the number in neither of two sets?
Atbilde
Subtract the number in the union from the total population.
193. kartīte
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How should rates from table groups be combined?
Atbilde
Divide the total numerator by the total denominator. Weight a group rate by its group size only when that size is the rate's denominator.
194. kartīte
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What is wrong with moving from some cases to all cases?
Atbilde
The conclusion is broader than the evidence. Evidence that some members have a trait doesn't show that every member does.
195. kartīte
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When should you use a permutation?
Atbilde
When selecting and arranging items and order matters. The number of ordered selections of r from n distinct items is n!/(n − r)!.
196. kartīte
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Why does table granularity matter?
Atbilde
A row-level fact may disappear or change after aggregation. Match the claim to the table’s level of detail.
197. kartīte
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How do you find the probability that an event does not occur?
Atbilde
1 − P(event). This is often the quickest route for “at least one” questions.
198. kartīte
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Why does a comparable control group help test causation?
Atbilde
It shows what happened without the suspected cause. If the groups differ mainly in that factor, the result is harder to explain another way.
199. kartīte
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How should missing table entries be treated?
Atbilde
As unknown unless the notes define another meaning. Exclude or include them only as the question directs.
200. kartīte
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What is the mode of a data set?
Atbilde
A mode is any value with the greatest frequency. Under the no-mode convention, there is no mode only when at least two distinct values all have equal frequency.
201. kartīte
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What makes a table comparison valid?
Atbilde
The values must have compatible measures, units, periods, populations, and definitions. Normalize only validly convertible differences; reject differences in population, period, or definition that cannot be reconciled.
202. kartīte
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What should you check when a prediction extends a past pattern?
Atbilde
Whether the conditions behind the past pattern will continue. A trend alone doesn't show that its causes will remain in place.
203. kartīte
Jautājums
How should a drain or other undoing process enter a work-rate equation?
Atbilde
As a negative rate. Add productive rates and subtract rates that reverse the work.
204. kartīte
Jautājums
How can you avoid losing your place while scanning a table?
Atbilde
Evaluate one condition at a time and mark qualifying rows mentally or on the scratchpad. Count only after the final filter.
205. kartīte
Jautājums
Can evidence that an outcome is possible show it is likely?
Atbilde
No. Possibility only shows that an outcome can occur; probability requires evidence about how likely it is.
206. kartīte
Jautājums
What correction is needed when counting the union of three sets?
Atbilde
Add the three individual counts, subtract all three pairwise overlaps, then add the triple overlap back once.
207. kartīte
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When does a filtered table support a decision?
Atbilde
When the qualifying rows satisfy the stated rule. Keep filtering, calculation, and decision as separate steps.
208. kartīte
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When should you use a combination?
Atbilde
When selecting items and order does not matter. The number of selections of r from n distinct items is n!/[r!(n − r)!].
209. kartīte
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What must support a recommendation?
Atbilde
A link from the proposed action to the stated goal. The argument also needs the action to be feasible and free of costs that defeat the goal.
210. kartīte
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How do AND and OR change a table filter?
Atbilde
AND requires every condition; OR requires at least one. Parenthesize mixed rules before scanning rows.
211. kartīte
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How do you find the probability that independent events both occur?
Atbilde
Multiply their probabilities: P(A and B) = P(A) × P(B).
212. kartīte
Jautājums
What can make an alphabetical sort misleading?
Atbilde
Labels may contain categories or embedded numbers. Confirm whether the column is text, numeric, or chronological.
213. kartīte
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What kind of fact most directly strengthens an argument?
Atbilde
A fact that supports the missing link between evidence and conclusion. Merely repeating a premise adds little.
214. kartīte
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What is the range of a data set?
Atbilde
Maximum value minus minimum value.
215. kartīte
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What should you check at a filter cutoff?
Atbilde
Whether the boundary is inclusive. “At least 40” includes 40; “more than 40” does not.
216. kartīte
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A train covers 150 miles in 3 hours at a constant rate. What is its rate?
Atbilde
50 miles per hour. Rearrange distance = rate × time to get rate = 150 ÷ 3.
217. kartīte
Jautājums
What is the most direct way to weaken an argument?
Atbilde
Undermine a necessary assumption connecting the evidence to the conclusion. The premises can remain true while the conclusion loses support.
218. kartīte
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What does a tie in the sorted column imply?
Atbilde
The tied rows share rank on that measure. Their display order does not create a performance difference.
219. kartīte
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How do you identify a useful evaluation question?
Atbilde
Test whether opposite answers would push the argument in opposite directions. If both answers leave the conclusion unchanged, the question isn't useful.
220. kartīte
Jautājums
What should you identify first in Graphics Interpretation?
Atbilde
The chart type and what each visual encoding represents. Bars, lines, areas, and points support different readings.
221. kartīte
Jautājums
How do repeated identical items affect arrangement counts?
Atbilde
For n total items, divide n! by the factorial of each repeated count. Identical items do not create new arrangements when swapped.
222. kartīte
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What should you read before estimating a plotted value?
Atbilde
Both axis labels, units, and category order. Position has meaning only after the axes are understood.
223. kartīte
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How do you test whether a statement is a necessary assumption?
Atbilde
Negate it. If that negation seriously damages the argument, the original statement was necessary.
224. kartīte
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How do you find the probability that one of two mutually exclusive events occurs?
Atbilde
Add their probabilities: P(A or B) = P(A) + P(B). Their overlap is zero.
225. kartīte
Jautājums
What should you verify in a chart legend?
Atbilde
Which color, shape, or line maps to each series. Similar styling can otherwise swap the groups in your interpretation.
226. kartīte
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What does standard deviation measure?
Atbilde
How spread out values are around the mean. Greater dispersion means a larger standard deviation.
227. kartīte
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What standard should an inference meet?
Atbilde
It must follow from the given statements, without extra assumptions. Choose the modest claim the evidence guarantees.
228. kartīte
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What does a segment’s share depend on?
Atbilde
The correct whole. A category’s share of one region may differ from its share of the full dataset.
229. kartīte
Jautājums
For motion along the same line, when do you add or subtract two speeds to get relative speed?
Atbilde
Add the speeds for opposite directions; subtract the smaller speed from the larger for the same direction.
230. kartīte
Jautājums
What must a paradox explanation accomplish?
Atbilde
Make both surprising facts plausible at the same time. Rejecting either stated fact doesn't resolve the tension.
231. kartīte
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How is a segment in a stacked bar measured?
Atbilde
Subtract its lower boundary from its upper boundary. The upper endpoint alone is cumulative, not the segment value.
232. kartīte
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Eight students average 70 and twelve students average 80. What is the combined mean?
Atbilde
The group sizes are the weights: (8 × 70 + 12 × 80) ÷ 20 = 76.
233. kartīte
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What is the difference between a graph’s level and its rate of change?
Atbilde
Level is the plotted value; rate of change is the slope. A high line can still be falling.
234. kartīte
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How should you describe a statement's role in an argument?
Atbilde
Describe what it does, not just what it says. It may support the conclusion, present an objection, answer that objection, or illustrate a principle.
235. kartīte
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What is P(A given B)?
Atbilde
P(A and B) / P(B), provided P(B) > 0. Restrict the sample space to outcomes in B.
236. kartīte
Jautājums
How should slope be compared across a graph?
Atbilde
Use change in vertical value divided by change in horizontal value. Visual steepness is reliable only on the same scales.
237. kartīte
Jautājums
A driver covers equal distances at 30 mph and 60 mph. Is the average speed 45 mph?
Atbilde
No. Using 60 miles for each leg gives 120 miles in 3 hours, so the average speed is 40 mph.
238. kartīte
Jautājums
What should you identify first when evaluating a plan?
Atbilde
The plan's exact goal and success measure. A proposal can produce benefits yet still fail its stated objective.
239. kartīte
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What does a trend in a scatterplot establish?
Atbilde
An association in the displayed data. It does not by itself establish causation or predict every individual point.
240. kartīte
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How can you strengthen a causal explanation?
Atbilde
Rule out a credible alternative cause, support the proposed mechanism, or show the effect changes when the proposed cause changes.
241. kartīte
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How can an outlier affect a graphical trend?
Atbilde
It can pull a summary line or average away from the main cluster. Check whether the claim concerns all points or the typical pattern.
242. kartīte
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Why do probabilities usually change when sampling without replacement?
Atbilde
The sample space changes after each draw. Update both the favorable count and the total before multiplying conditional probabilities.
243. kartīte
Jautājums
One value in an n-value set increases by d. How does the mean change?
Atbilde
It increases by d/n because the total rises by d while the count stays fixed.
244. kartīte
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When does a counterexample weaken a claim?
Atbilde
When the claim requires the counterexample not to exist. One genuine exception can defeat an absolute claim, but may barely affect a modest one.
245. kartīte
Jautājums
What is the parity of the sum of two odd integers?
Atbilde
Even. Each odd integer is one more than an even integer, so the two extra ones add to 2.
246. kartīte
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What can an aggregate graph hide?
Atbilde
Differences among subgroups or periods. A stable total can coexist with large offsetting changes inside it.
247. kartīte
Jautājums
When is interpolation reasonable on a graph?
Atbilde
When the graph implies continuity between nearby points. Do not interpolate across separate categories.
248. kartīte
Jautājums
What makes information relevant to evaluating an argument?
Atbilde
It bears on the uncertain link the conclusion depends on. Interesting facts about the topic may still be logically irrelevant.
249. kartīte
Jautājums
How precise should a value read from a graph be?
Atbilde
Only as precise as the scale supports. Use a defensible interval when the mark falls between ticks.
250. kartīte
Jautājums
Must a necessary assumption prove the conclusion?
Atbilde
No. It only has to be required for the argument to work; it need not be enough to establish the conclusion on its own.
251. kartīte
Jautājums
How do you multiply positive numbers written in scientific notation?
Atbilde
Multiply the coefficients, add the powers of 10, then adjust the coefficient to be at least 1 and less than 10.
252. kartīte
Jautājums
How should a graph-based decision be made?
Atbilde
Translate the visual into values or bounds, then apply the stated rule. Do not decide from appearance alone.
253. kartīte
Jautājums
When is backsolving from answer choices especially useful?
Atbilde
When the choices are concrete values and direct algebra is slower than testing them in the original conditions.
254. kartīte
Jautājums
How can axis scale distort a visual impression?
Atbilde
Unequal intervals or a truncated baseline can magnify or compress differences. Use tick values, not apparent distance alone.
255. kartīte
Jautājums
When should you combine two statements for an inference?
Atbilde
When they share a term or relationship that creates a guaranteed consequence. Don't combine them through an unstated causal or statistical link.
256. kartīte
Jautājums
When is a product of integers odd?
Atbilde
Only when every factor is odd. One even factor makes the entire product even.
257. kartīte
Jautājums
What often resolves two apparently conflicting results?
Atbilde
A hidden difference in group, time, measurement, or conditions. The results may describe different slices of the situation.
258. kartīte
Jautājums
How should equal distances on a logarithmic axis be interpreted?
Atbilde
As equal multiplicative changes, not equal absolute changes. Read the labeled values before comparing gaps.
259. kartīte
Jautājums
Why start with a middle answer choice when backsolving ordered options?
Atbilde
Its result often eliminates half the choices at once when the relationship is monotonic.
260. kartīte
Jautājums
What makes a Two-Part Analysis response complete?
Atbilde
Both selections must satisfy their own column prompts under the same stem. Treat the pair as one submitted response.
261. kartīte
Jautājums
What is an analogy doing when it supports a claim?
Atbilde
It argues that because two cases share relevant features, a result or principle from one likely applies to the other.
262. kartīte
Jautājums
How do you represent three consecutive odd integers?
Atbilde
n, n + 2, and n + 4, where n is an odd integer.
263. kartīte
Jautājums
What should you identify before solving Two-Part Analysis?
Atbilde
The role of each column. One may ask for a condition while the other asks for a consequence or decision.
264. kartīte
Jautājums
What values should you test first in a claim about an unspecified number?
Atbilde
Test allowed categories that may behave differently: positive, negative, zero, fractional, and boundary values.
265. kartīte
Jautājums
How can an unchanged bottleneck defeat a plan?
Atbilde
Improving a nonlimiting step won't improve the final outcome if another constraint still controls it. Faster ordering doesn't help when production is already full.
266. kartīte
Jautājums
How does the shared stem affect the two parts?
Atbilde
Its definitions and constraints apply to both. Keep them fixed while testing each column’s requirement.
267. kartīte
Jautājums
How do you count the positive divisors of an integer greater than 1 from its prime factorization?
Atbilde
Add 1 to each prime exponent, then multiply those results.
268. kartīte
Jautājums
In Two-Part Analysis, must the two selected entries be the same?
Atbilde
In the current format, the two selected entries may be the same or different. A linkage in the stem determines whether you must reason through them jointly, not whether their values match.
269. kartīte
Jautājums
What makes evidence for a general claim strong?
Atbilde
It should be relevant and reliable and, if case-based, come from representative cases. More evidence isn't automatically better evidence.
270. kartīte
Jautājums
How do you factor a difference of squares?
Atbilde
Use x² − y² = (x − y)(x + y).
271. kartīte
Jautājums
When should the two Two-Part Analysis selections be solved together?
Atbilde
When one shared relationship constrains both. Test candidate pairs against that relationship instead of solving isolated fragments.
272. kartīte
Jautājums
How can one counterexample evaluate a universal claim?
Atbilde
One valid counterexample disproves a claim that is supposed to hold for every allowed value.
273. kartīte
Jautājums
How does an alternative explanation weaken a conclusion?
Atbilde
It shows that the evidence can be true without the proposed explanation being true. The alternative must account for the same result.
274. kartīte
Jautājums
In Two-Part Analysis, how can one column help solve the other?
Atbilde
A valid selection can narrow the remaining candidates when the parts share a constraint. Recheck the final pair in both columns.
275. kartīte
Jautājums
How do you test whether x² + bx + c factors into integer binomials?
Atbilde
Look for integers r and s with r + s = b and rs = c. If they exist, the factorization is (x + r)(x + s).
276. kartīte
Jautājums
Which unknown should you evaluate first in a plan argument?
Atbilde
A condition that could make the plan achieve or miss its goal. Focus on feasibility, response, costs, and side effects tied to that goal.
277. kartīte
Jautājums
How should a trade-off between two measures be evaluated?
Atbilde
Apply the stated priorities or limits. An option is better only relative to the rule, not because one measure is largest.
278. kartīte
Jautājums
How can estimation screen answer choices before exact calculation?
Atbilde
Approximate the expression's magnitude, then eliminate choices that are far too large or too small.
279. kartīte
Jautājums
In a constrained-decision Two-Part Analysis problem, what should you check before comparing candidates?
Atbilde
Check every hard constraint first. Discard any option that breaks a required limit, then compare only the feasible candidates.
280. kartīte
Jautājums
What does a defensive assumption do?
Atbilde
It rules out a threat that would break the argument. For example, a revenue plan may assume that its added costs won't exceed the new revenue.
281. kartīte
Jautājums
What restriction applies when a variable appears in a denominator?
Atbilde
Exclude every value that makes the denominator zero.
282. kartīte
Jautājums
How does an objective differ from a constraint?
Atbilde
A constraint determines what is allowed; an objective ranks the allowed options. Apply them in that order.
283. kartīte
Jautājums
Which quick checks catch many Quant answer errors?
Atbilde
Check the sign, units, allowed range, and rough size against the question's conditions.
284. kartīte
Jautājums
What inference is safe from a statement about most members?
Atbilde
More than half have the stated trait. You can't infer that all do, that any particular member does, or that most have another trait.
285. kartīte
Jautājums
How should a two-part threshold rule be handled?
Atbilde
Translate each threshold with the correct inequality, including its boundary. Then test both selected values against it.
286. kartīte
Jautājums
Where can one negative sign appear in a fraction without changing its value?
Atbilde
Before the fraction, in the numerator, or in the denominator: −(a/b) = (−a)/b = a/(−b), provided b ≠ 0.
287. kartīte
Jautājums
How does an argument choose between competing explanations?
Atbilde
It presents evidence that one explanation handles better than the others, often by ruling out a rival prediction.
288. kartīte
Jautājums
What is an efficient way to handle two linked algebraic targets?
Atbilde
Express both in terms of one variable or invariant. Evaluate candidate values only after the relationship is clear.
289. kartīte
Jautājums
How do you solve x² = c over the real numbers?
Atbilde
If c > 0, x = ±√c; if c = 0, x = 0; if c < 0, there is no real solution.
290. kartīte
Jautājums
What should you check when two selected quantities form a ratio?
Atbilde
Order and scale. The ratio A:B is not interchangeable with B:A, and proportional pairs may all fit.
291. kartīte
Jautājums
How does a positive proper fraction compare with 1?
Atbilde
It is less than 1 because its numerator is smaller than its denominator.
292. kartīte
Jautājums
Which side effects matter when evaluating a plan?
Atbilde
Effects that change the plan's net result or work against its goal. A small unrelated inconvenience usually doesn't matter.
293. kartīte
Jautājums
How should a two-part logical claim be tested?
Atbilde
Separate the condition from the conclusion, then test whether each selected statement performs the requested role.
294. kartīte
Jautājums
What is the solution pattern for |x| = a over the real numbers?
Atbilde
If a > 0, x = ±a; if a = 0, x = 0; if a < 0, there is no real solution.
295. kartīte
Jautājums
What unit check belongs in a two-part quantitative answer?
Atbilde
Confirm that each selection has the unit requested by its column. Linked values may require different conversions.
296. kartīte
Jautājums
Why does user response matter to a plan?
Atbilde
The plan may depend on people adopting, following, or not avoiding it. Availability alone doesn't guarantee the needed behavior.
297. kartīte
Jautājums
A response rate rises from 40% to 50%. What are the percentage-point change and the relative percent increase?
Atbilde
The increase is 10 percentage points and 25% relative to the original rate: (50 − 40) ÷ 40 = 0.25.
298. kartīte
Jautājums
What is the final check for Two-Part Analysis?
Atbilde
Read each column prompt with its chosen entry, then verify that the pair is jointly consistent with the stem.
299. kartīte
Jautājums
For real x and y, what two linear cases are equivalent to x² = y²?
Atbilde
x = y or x = −y.
300. kartīte
Jautājums
How should benefits and costs be compared in a plan argument?
Atbilde
By their net effect on the stated goal. A plan can create the intended benefit but still fail if its relevant costs are larger.

Abstract study workspace with blue number blocks, amber argument notes, and teal charts around a central light.

300 kartīšu

GMAT Flashcards: Quant, Verbal & Data Insights Decisions

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GMAT Flashcards: Quant, Verbal & Data Insights Decisions

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