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.

Szerző Open Study Contributor

A pakliról

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.

Kártyák ebben a pakliban

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

GMAT Flashcards: Quant, Verbal & Data Insights Decisions

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GMAT Flashcards: Quant, Verbal & Data Insights Decisions

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