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.

نوشتهٔ Open Study Contributor

دربارهٔ این دسته

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.

کارت‌های این دسته

کارت ۱
پرسش
Which numerator-and-denominator operation creates an equivalent fraction?
پاسخ
Multiply or divide the numerator and denominator by the same nonzero number. The fraction's value stays unchanged.
کارت ۲
پرسش
What does data sufficiency ask you to determine?
پاسخ
Whether the information guarantees one answer. You usually don’t need to calculate that answer.
کارت ۳
پرسش
How do you form a passage's main idea?
پاسخ
Combine the passage's central topic with its main claim about that topic. The answer should cover the whole passage at the right level.
کارت ۴
پرسش
What does multiplying a decimal by 10ⁿ do when n is a positive integer?
پاسخ
It moves the decimal point n places to the right. Dividing by 10ⁿ moves it n places left.
کارت ۵
پرسش
What makes information sufficient for a value question?
پاسخ
It forces exactly one value for the target. Different values that satisfy all conditions make it insufficient.
کارت ۶
پرسش
How do you identify the passage's primary purpose?
پاسخ
Name what the author is doing with the topic: explaining, comparing, challenging, defending, or proposing. Keep content and action together.
کارت ۷
پرسش
How do you find p percent of a quantity q?
پاسخ
Compute (p/100) × q. Translate “of” as multiplication.
کارت ۸
پرسش
How can two valid cases prove insufficiency?
پاسخ
Make the cases produce different answers to the question. One clean counterexample pair is enough.
کارت ۹
پرسش
How do you determine a paragraph's role?
پاسخ
Connect the paragraph to what comes before and after it. Decide whether it introduces, supports, qualifies, contrasts, applies, or concludes the larger discussion.
کارت ۱۰
پرسش
A total of 45 is split in the ratio 2:3. What are the two parts?
پاسخ
18 and 27. The five ratio units are worth 45 ÷ 5 = 9 each.
کارت ۱۱
پرسش
Why can an integer restriction change sufficiency?
پاسخ
It removes noninteger possibilities. A range containing many real numbers may contain only one integer.
کارت ۱۲
پرسش
When is a product of signed factors negative?
پاسخ
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.
کارت ۱۳
پرسش
How should two data-sufficiency statements be tested initially?
پاسخ
Test each statement independently against the stem. Do not carry information from one statement into the other.
کارت ۱۴
پرسش
What makes an integer greater than 1 prime?
پاسخ
It has exactly two positive divisors: 1 and itself.
کارت ۱۵
پرسش
What should you do first on a detail question?
پاسخ
Return to the relevant lines and read their local context. Memory tends to preserve the topic while blurring qualifications.
کارت ۱۶
پرسش
What is the divisibility rule for 2?
پاسخ
The last digit must be even: 0, 2, 4, 6, or 8.
کارت ۱۷
پرسش
How do you test whether a fact is relevant?
پاسخ
Connect it to the requested target. A true fact that does not narrow the target adds no decision value.
کارت ۱۸
پرسش
How far may a reading inference go beyond the text?
پاسخ
Only as far as the text strongly supports. Prefer the smallest justified step and reject claims needing outside knowledge.
کارت ۱۹
پرسش
Why is prime factorization useful in GMAT arithmetic?
پاسخ
It exposes divisibility, factors, greatest common factors, least common multiples, and perfect powers.
کارت ۲۰
پرسش
What must happen before quantities with different units are combined?
پاسخ
First confirm that their dimensions are compatible, then convert them to a common unit. Keep the unit attached through the calculation to catch mismatches.
کارت ۲۱
پرسش
How do you apply a passage principle to a new case?
پاسخ
Extract the principle's required conditions, then test whether the new case has them. Surface similarity isn't enough.
کارت ۲۲
پرسش
Which relationship connects distance, rate, and time?
پاسخ
Distance = rate × time. Rearrange only after the units are compatible.
کارت ۲۳
پرسش
How do you find a least common multiple from prime factorizations?
پاسخ
Take every prime that appears, using the largest exponent present.
کارت ۲۴
پرسش
How do you multiply powers with the same base?
پاسخ
Add the exponents: aᵐ × aⁿ = aᵐ⁺ⁿ.
کارت ۲۵
پرسش
How is a weighted average computed?
پاسخ
Divide the total weighted value by the total weight. For groups, use group size as the weight unless another weight is given.
کارت ۲۶
پرسش
What should a quick passage map record?
پاسخ
Each paragraph's role and major viewpoint, plus the passage's overall direction. Record structure, not a sentence-by-sentence summary.
کارت ۲۷
پرسش
What does the principal square root symbol √x return?
پاسخ
For real x ≥ 0, it is the nonnegative number whose square is x. For example, √9 = 3, not ±3.
کارت ۲۸
پرسش
When can bounds replace exact arithmetic?
پاسخ
When the bounds separate the viable decisions. Stop once every value in the interval leads to the same choice.
کارت ۲۹
پرسش
How do you keep viewpoints separate?
پاسخ
Attach each claim to its speaker: author, critic, researcher, or group. Track agreement, disagreement, and any later qualification.
کارت ۳۰
پرسش
How do “sum,” “product,” and “quotient” translate into algebra?
پاسخ
They mean addition, multiplication, and division, respectively.
کارت ۳۱
پرسش
How do you reduce a fraction to lowest terms?
پاسخ
Divide the numerator and denominator by their greatest common factor.
کارت ۳۲
پرسش
What evidence should determine the author's tone?
پاسخ
Evaluative words, qualifications, and the treatment of competing views. Topic alone doesn't establish approval, concern, or skepticism.
کارت ۳۳
پرسش
When should rounding usually occur?
پاسخ
At the end, unless estimation already settles the decision. Early rounding can move a result across a cutoff.
کارت ۳۴
پرسش
How do you convert a terminating decimal to a fraction?
پاسخ
Write the digits over the matching power of 10, then reduce. For example, 0.375 = 375/1000 = 3/8.
کارت ۳۵
پرسش
When should you stop calculating in a sufficiency problem?
پاسخ
As soon as uniqueness is proved or disproved. More arithmetic cannot change the sufficiency decision.
کارت ۳۶
پرسش
How do you spot an out-of-scope answer?
پاسخ
It introduces a person, period, cause, or consequence the passage doesn't address. Being reasonable doesn't make it textually supported.
کارت ۳۷
پرسش
What is the percent-change formula?
پاسخ
For original > 0, percent change = (new − original) / original × 100%. Percent change from zero is undefined; negative baselines require context-specific interpretation.
کارت ۳۸
پرسش
What makes information sufficient for a yes-or-no question?
پاسخ
It forces the same yes-or-no answer in every valid case. The underlying value may still vary.
کارت ۳۹
پرسش
What preserves a ratio when its quantities are scaled?
پاسخ
Multiplying or dividing both terms by the same nonzero factor preserves the ratio.
کارت ۴۰
پرسش
How do you reject a main-idea answer with the wrong scope?
پاسخ
Compare it with the whole passage. A detail-only answer is too narrow; a claim extending beyond the passage is too broad.
کارت ۴۱
پرسش
Why should you track whether a variable is positive, negative, or zero?
پاسخ
Sign controls valid cases and operations. Squaring can hide sign, and division requires a nonzero denominator.
کارت ۴۲
پرسش
How do you simplify subtraction of a negative number?
پاسخ
Change it to addition: a − (−b) = a + b.
کارت ۴۳
پرسش
Whose purpose matters in a primary-purpose question?
پاسخ
The passage author's purpose. A theory or researcher may be described at length without representing what the author ultimately wants to do.
کارت ۴۴
پرسش
When is the on-screen calculator most useful?
پاسخ
For tedious arithmetic after the setup is clear. It does not replace choosing the right relationship or denominator.
کارت ۴۵
پرسش
In Data Sufficiency, what stem information applies when testing either statement?
پاسخ
Everything in the question stem. Stem facts remain active for each statement and for the combination.
کارت ۴۶
پرسش
What is the divisibility rule for 3?
پاسخ
The sum of the digits must be divisible by 3.
کارت ۴۷
پرسش
What does a transition paragraph often do?
پاسخ
It closes one line of thought and sets up the next. Its role depends on both sides, not only on its first sentence.
کارت ۴۸
پرسش
When is a proxy measure useful?
پاسخ
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.
کارت ۴۹
پرسش
How do you find a greatest common factor from prime factorizations?
پاسخ
Take each shared prime to the smaller exponent.
کارت ۵۰
پرسش
What is the arithmetic mean?
پاسخ
The sum of the values divided by the number of values.
کارت ۵۱
پرسش
What units should a rate have?
پاسخ
One quantity per another, such as kilometers per hour. The denominator tells you what the rate is measured against.
کارت ۵۲
پرسش
How do you divide powers with the same nonzero base?
پاسخ
Subtract the exponents: aᵐ ÷ aⁿ = aᵐ⁻ⁿ.
کارت ۵۳
پرسش
What makes a paraphrase faithful to a passage detail?
پاسخ
It preserves the original meaning, scope, and certainty in different words. Shared keywords alone don't make it accurate.
کارت ۵۴
پرسش
How do you recover a total from an average?
پاسخ
Total = average × number of values.
کارت ۵۵
پرسش
How do you choose between two plausible reading inferences?
پاسخ
Choose the one with the tighter textual chain and fewer assumptions. Plausibility in the real world is secondary.
کارت ۵۶
پرسش
What quick check can catch a calculator-entry error?
پاسخ
Estimate the order of magnitude and direction first. An exact result far outside that range deserves another look.
کارت ۵۷
پرسش
How do you simplify a square root with a perfect-square factor?
پاسخ
Factor out the perfect square. For example, √72 = √(36 × 2) = 6√2.
کارت ۵۸
پرسش
What makes a new example parallel to one in the passage?
پاسخ
The same logical relationship. Match cause, contrast, exception, or function rather than shared subject matter.
کارت ۵۹
پرسش
When can work rates be added?
پاسخ
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.
کارت ۶۰
پرسش
What is the denominator in a percent comparison?
پاسخ
The stated reference value. “A as a percent of B” means A divided by B, then multiplied by 100.
کارت ۶۱
پرسش
How do you translate “5 less than x”?
پاسخ
x − 5. The phrase “less than” reverses the spoken order.
کارت ۶۲
پرسش
In Data Sufficiency, what should you check before testing values?
پاسخ
The full domain. Honor stated restrictions and implicit ones such as positive lengths or nonzero divisors before judging sufficiency.
کارت ۶۳
پرسش
How do you add fractions with different denominators?
پاسخ
Rewrite them with a common denominator, then add the numerators. For example, 2/3 + 1/4 = 8/12 + 3/12 = 11/12.
کارت ۶۴
پرسش
How do you distinguish description from argument in a passage?
پاسخ
Description presents what happened or what a view says; argument gives reasons to accept, reject, or revise a claim.
کارت ۶۵
پرسش
How should you compare decimals with different lengths?
پاسخ
Append trailing zeros and compare place by place. For example, compare 0.47 with 0.4700, which are equal.
کارت ۶۶
پرسش
How should combined statements be evaluated?
پاسخ
Intersect their constraints with the stem. The combination is sufficient only if every remaining case gives one answer.
کارت ۶۷
پرسش
How do you find common ground between two viewpoints?
پاسخ
Look for the narrow claim both accept, even if they disagree about its cause, importance, or implications.
کارت ۶۸
پرسش
How do you solve a proportion such as a/b = c/d?
پاسخ
Cross-multiply to get ad = bc, provided b and d are nonzero.
کارت ۶۹
پرسش
How is average speed computed?
پاسخ
Total distance divided by total time. It is not usually the simple mean of the segment speeds.
کارت ۷۰
پرسش
What does |x| represent?
پاسخ
The nonnegative distance from x to 0 on the number line.
کارت ۷۱
پرسش
Why are strongly emotional tone descriptions often wrong?
پاسخ
They overstate measured academic prose. Match the answer's intensity to the author's actual language.
کارت ۷۲
پرسش
What is the divisibility rule for 4?
پاسخ
The number formed by the last two digits must be divisible by 4.
کارت ۷۳
پرسش
Can the ordinary percent-change formula be applied directly when the original value is zero or negative?
پاسخ
No. The ordinary GMAT rule assumes original > 0. Change from zero is undefined, and a negative baseline requires context-specific interpretation.
کارت ۷۴
پرسش
Why can a true statement still be a wrong answer?
پاسخ
It may not answer the question asked. Check the task—main idea, detail, inference, role, or purpose—before checking truth.
کارت ۷۵
پرسش
When must a weighted average lie between its component values?
پاسخ
When every weight is nonnegative and the total weight is positive. The average then lies between the smallest and largest component values.
کارت ۷۶
پرسش
How do you express an integer n divided by d with remainder r?
پاسخ
n = dq + r, where q is an integer and 0 ≤ r < d for positive d.
کارت ۷۷
پرسش
What does an inequality usually provide?
پاسخ
A range, not a unique value. It can still be sufficient if the question asks whether a threshold is crossed.
کارت ۷۸
پرسش
How should you handle an EXCEPT detail prompt?
پاسخ
Verify four statements against the passage and select the one that isn't supported. Keep the reversed task visible while checking each choice.
کارت ۷۹
پرسش
How should you set up a unit conversion?
پاسخ
Multiply by a conversion factor equal to 1, placing units so the unwanted unit cancels.
کارت ۸۰
پرسش
Can two individually insufficient statements remain insufficient together?
پاسخ
Yes. They may repeat the same limitation or still leave multiple valid answers.
کارت ۸۱
پرسش
For a positive base, how do you simplify a power raised to another power?
پاسخ
Multiply the exponents: (aᵐ)ⁿ = a^(mn).
کارت ۸۲
پرسش
When can you infer that an author accepts a claim?
پاسخ
When the author endorses it directly or relies on it without distancing language. Merely reporting another person's view isn't endorsement.
کارت ۸۳
پرسش
How should successive percentage changes be combined?
پاسخ
Multiply their factors. A 10% rise followed by a 10% fall gives 1.10 × 0.90 = 0.99, a 1% net fall.
کارت ۸۴
پرسش
What are compatible numbers in estimation?
پاسخ
Nearby numbers chosen to make mental arithmetic easy, such as 203 ÷ 9.9 ≈ 200 ÷ 10 = 20.
کارت ۸۵
پرسش
Which constraints are easy to overlook in a word problem?
پاسخ
Countability, positivity, distinctness, and capacity limits. Translate each noun and rule into a usable constraint.
کارت ۸۶
پرسش
How do you state the exact disagreement between two viewpoints?
پاسخ
Identify one claim that one side accepts and the other rejects. Don't substitute a topic that only one side discusses.
کارت ۸۷
پرسش
How do you represent three consecutive integers?
پاسخ
n, n + 1, and n + 2 for an integer n.
کارت ۸۸
پرسش
How do percentage points differ from percent change?
پاسخ
Percentage points are the direct difference between percentages. Moving from 20% to 25% is 5 points and a 25% relative increase.
کارت ۸۹
پرسش
What is a reversed-relationship trap?
پاسخ
It swaps cause and effect, support and conclusion, or the positions of two viewpoints while reusing familiar passage language.
کارت ۹۰
پرسش
How do you multiply two fractions?
پاسخ
Multiply numerator by numerator and denominator by denominator, canceling common factors when convenient.
کارت ۹۱
پرسش
How do direct and inverse proportion differ?
پاسخ
Direct: y = kx; inverse: y = k/x for x ≠ 0.
کارت ۹۲
پرسش
How do you recover an original value after a percentage increase?
پاسخ
Divide the new value by the growth factor. After a 20% increase, original = new ÷ 1.20.
کارت ۹۳
پرسش
When should absolute wording raise suspicion?
پاسخ
When the passage is qualified. Words such as always, never, entirely, and impossible require equally strong textual support.
کارت ۹۴
پرسش
What should you identify first in Data Sufficiency?
پاسخ
The exact target and answer type. Decide whether the stem asks for a value, a comparison, or a yes-or-no result.
کارت ۹۵
پرسش
What ending makes an integer divisible by 5 or by 10?
پاسخ
A last digit of 0 or 5 gives divisibility by 5; a last digit of 0 gives divisibility by 10.
کارت ۹۶
پرسش
How should a Data Sufficiency condition be handled?
پاسخ
Translate it into a precise constraint before testing sufficiency. Keep it separate from the conclusion you want.
کارت ۹۷
پرسش
How do you reject a half-right answer?
پاسخ
Test every part of it. One accurate clause can't rescue a second clause that distorts the passage or exceeds its scope.
کارت ۹۸
پرسش
When you convert a positive measurement to a smaller linear unit, what happens to its numerical value?
پاسخ
It increases. Multiply by the number of smaller units in one larger unit.
کارت ۹۹
پرسش
DS example: Is x > 5? Statement: x > 3. Is the statement sufficient?
پاسخ
No. Both x = 4 and x = 6 satisfy the statement, but they answer the stem differently.
کارت ۱۰۰
پرسش
What is a⁰ when a is nonzero?
پاسخ
The nonzero-base condition matters because 0⁰ is not assigned this rule.
کارت ۱۰۱
پرسش
Which claim is the argument trying to establish?
پاسخ
The main conclusion. Find the claim supported by the other statements, then check that it answers the argument's central issue.
کارت ۱۰۲
پرسش
When should the two statements be combined?
پاسخ
When neither statement is sufficient alone. Use both constraints at once and test the remaining possibilities.
کارت ۱۰۳
پرسش
A positive number rounds to 8.2 to the nearest tenth. What interval contains it?
پاسخ
8.15 ≤ x < 8.25. The lower endpoint rounds up to 8.2; the upper endpoint rounds to 8.3.
کارت ۱۰۴
پرسش
What should you check when the conclusion changes populations?
پاسخ
Whether the evidence applies to the new population. Results from volunteers, specialists, or one age group may not transfer to everyone.
کارت ۱۰۵
پرسش
How should test values be chosen in Data Sufficiency?
پاسخ
Choose valid values that probe boundaries, signs, and distinct outcomes. Random easy values can miss the deciding case.
کارت ۱۰۶
پرسش
How do you translate “A is 30% more than B”?
پاسخ
A = 1.30B. The percentage is based on B.
کارت ۱۰۷
پرسش
When can one equation involving two variables be sufficient for a target?
پاسخ
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.
کارت ۱۰۸
پرسش
What does a correlation establish by itself?
پاسخ
Only that two things vary together. It doesn't establish which one causes the other or whether a third factor causes both.
کارت ۱۰۹
پرسش
How do you divide by a nonzero fraction?
پاسخ
Multiply by its reciprocal. For example, 3/5 ÷ 2/7 = 3/5 × 7/2.
کارت ۱۱۰
پرسش
Why is a ratio often insufficient for an absolute value?
پاسخ
A ratio fixes relative size but usually leaves the scale free. Many proportional pairs can share the same ratio.
کارت ۱۱۱
پرسش
What is the divisibility rule for 9?
پاسخ
The sum of the digits must be divisible by 9.
کارت ۱۱۲
پرسش
What matters most when applying a sample result to a population?
پاسخ
Representativeness. The sample must resemble the target population on traits that could affect the result.
کارت ۱۱۳
پرسش
What should you check after solving a squared equation?
پاسخ
Check every allowed root. If positive and negative roots produce different target answers, the information is insufficient.
کارت ۱۱۴
پرسش
What does a negative exponent mean?
پاسخ
It takes the reciprocal: a⁻ⁿ = 1/aⁿ for nonzero a.
کارت ۱۱۵
پرسش
Which baseline makes a comparison informative?
پاسخ
The baseline relevant to the claim. Compare the outcome with what would otherwise have happened, not merely with an unrelated earlier figure.
کارت ۱۱۶
پرسش
What risk appears when an equation factors into multiple branches?
پاسخ
Each branch may create valid cases. Test all branches against the stem before deciding sufficiency.
کارت ۱۱۷
پرسش
How can you compare two positive fractions quickly?
پاسخ
Compare their cross-products. For a/b and c/d with positive denominators, compare ad with bc.
کارت ۱۱۸
پرسش
What may be assumed from a Data Sufficiency diagram?
پاسخ
Only marked or stated facts. Do not infer scale, equality, perpendicularity, or midpoint status from appearance.
کارت ۱۱۹
پرسش
What multiplier represents a p percent increase or decrease?
پاسخ
Use 1 + p/100 for an increase and 1 − p/100 for a decrease.
کارت ۱۲۰
پرسش
Which statements count as evidence?
پاسخ
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.
کارت ۱۲۱
پرسش
Can a mean determine an individual observation?
پاسخ
Not by itself. A mean fixes the total, but different sets can have that total unless more constraints apply.
کارت ۱۲۲
پرسش
What weakens a move from past evidence to a present claim?
پاسخ
A relevant change over time. New technology, prices, rules, or behavior can make the earlier evidence a poor guide.
کارت ۱۲۳
پرسش
A value becomes 96 after a 20% increase. What was the original value?
پاسخ
Divide the final value by the growth multiplier: 96 ÷ 1.2 = 80.
کارت ۱۲۴
پرسش
How do extreme valid cases help in Data Sufficiency?
پاسخ
They expose whether the target can change. Test the smallest, largest, or boundary cases allowed by the conditions.
کارت ۱۲۵
پرسش
How do you test for reverse causation?
پاسخ
Ask whether the alleged effect could instead cause the alleged cause. Productive teams may meet more because they are productive, not the reverse.
کارت ۱۲۶
پرسش
Must a sufficient statement make every variable unique?
پاسخ
No. It only needs to make the requested target unique, even if other variables remain undetermined.
کارت ۱۲۷
پرسش
A price rises 20% and then falls 20%. Does it return to its original value?
پاسخ
No. The multipliers give 1.20 × 0.80 = 0.96, so the final price is 4% below the original.
کارت ۱۲۸
پرسش
Why can a voluntary survey be biased?
پاسخ
People who choose to respond may differ from those who don't. Strong opinions or extra interest can distort the sample.
کارت ۱۲۹
پرسش
How do you expand a(b + c)?
پاسخ
ab + ac. The outside factor multiplies every term inside the parentheses.
کارت ۱۳۰
پرسش
What should the final Data Sufficiency decision describe?
پاسخ
Which information set guarantees an answer. It should not report the target’s numerical value.
کارت ۱۳۱
پرسش
What is the goal when solving a linear equation?
پاسخ
Isolate the variable by applying equivalent operations to both sides.
کارت ۱۳۲
پرسش
DS example: Is integer n even? Statement: n = 7. Is the statement sufficient?
پاسخ
Yes. It guarantees one answer—no. A statement can be sufficient even when that answer is negative.
کارت ۱۳۳
پرسش
When must an inequality sign reverse?
پاسخ
When both sides are multiplied or divided by a negative number.
کارت ۱۳۴
پرسش
What must be checked before comparing two groups?
پاسخ
Whether they differ in other relevant ways. Age, experience, starting level, or incentives may explain the outcome instead.
کارت ۱۳۵
پرسش
When is substitution preferable to elimination in a two-equation system?
پاسخ
Use substitution when one variable is already isolated or easy to isolate; use elimination when coefficients cancel easily.
کارت ۱۳۶
پرسش
What should you build before analyzing Multi-Source Reasoning material?
پاسخ
A quick source map. Note what each tab or document contains, who produced it, and the relevant date or scope.
کارت ۱۳۷
پرسش
How do you separate background from evidence?
پاسخ
Ask whether the statement supports a claim. Background sets context; evidence does logical work in moving the argument toward a conclusion.
کارت ۱۳۸
پرسش
Which algebraic terms can be combined?
پاسخ
Terms with the same variable part and exponents. For example, 3x² and −5x² combine, but 3x² and 3x do not.
کارت ۱۳۹
پرسش
When should you read the Multi-Source Reasoning question?
پاسخ
Before a deep read of every source. The question tells you which details deserve attention.
کارت ۱۴۰
پرسش
What is a reliable first step for an equation containing several fractions?
پاسخ
Multiply every term by the least common denominator, then solve the simpler equation.
کارت ۱۴۱
پرسش
Why does source provenance matter?
پاسخ
It defines what a claim can support. An internal forecast and an audited result do not carry the same evidentiary weight.
کارت ۱۴۲
پرسش
What should you test when evidence comes from a different setting?
پاسخ
Whether the settings differ in a way that affects the result. A finding from one market, school, or climate may not carry over unchanged.
کارت ۱۴۳
پرسش
What does an “and” compound inequality require?
پاسخ
The overlap of both solution sets. A value must satisfy both conditions.
کارت ۱۴۴
پرسش
What should you compare before combining claims from two sources?
پاسخ
Their population, period, units, and definitions. Matching labels can hide different scopes.
کارت ۱۴۵
پرسش
How can a third factor undermine a causal claim?
پاسخ
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.
کارت ۱۴۶
پرسش
What do one, zero, or infinitely many solutions mean for two linear equations in two variables?
پاسخ
The lines intersect once, are parallel and distinct, or are the same line, respectively.
کارت ۱۴۷
پرسش
How should records from separate sources be linked?
پاسخ
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.
کارت ۱۴۸
پرسش
How do you factor 6x + 9?
پاسخ
3(2x + 3). Pull out the greatest common factor.
کارت ۱۴۹
پرسش
When does nonresponse threaten a survey result?
پاسخ
When nonrespondents may answer differently from respondents. A high response count doesn't fix a systematic missing group.
کارت ۱۵۰
پرسش
What is the first step when two sources seem inconsistent?
پاسخ
Compare definitions, dates, units, and aggregation levels. Many apparent conflicts come from mismatched frames.
۳۰۰ کارت
GMAT Flashcards: Quant, Verbal & Data Insights Decisions
این دسته را رایگان مطالعه کنید
Nibomo باز می‌شود تا بتوانید مطالعه را شروع کنید.
کارت ۱۵۱
پرسش
When can you use the zero-product property?
پاسخ
After rewriting a product equal to zero. If (x − 2)(x + 5) = 0, then x = 2 or x = −5.
کارت ۱۵۲
پرسش
How does an inference differ from a stated fact?
پاسخ
A fact appears directly in a source; an inference must follow from the sources without an extra assumption.
کارت ۱۵۳
پرسش
Does a higher percentage by itself prove a higher count?
پاسخ
No. The underlying totals matter. Twenty percent of 1,000 is more than fifty percent of 100.
کارت ۱۵۴
پرسش
What does an “or” compound inequality require?
پاسخ
The union of the solution sets. A value may satisfy either condition or both.
کارت ۱۵۵
پرسش
What does a blank or omitted value establish?
پاسخ
Only that the value is not provided. It does not establish zero, no change, or failure.
کارت ۱۵۶
پرسش
How do you recognize an intermediate conclusion?
پاسخ
It is supported by one claim and supports another. It acts as both a conclusion and a premise in the same argument.
کارت ۱۵۷
پرسش
What should you do before writing equations for a two-quantity word problem?
پاسخ
Define each variable with its unit, then translate one independent relationship per equation.
کارت ۱۵۸
پرسش
Why should cross-source events be placed in time order?
پاسخ
Sequence separates prior conditions from later outcomes and prevents using future information as an earlier cause.
کارت ۱۵۹
پرسش
When should candidate solutions be checked in the original equation?
پاسخ
Always after a step that may introduce solutions, especially squaring both sides or clearing variable denominators.
کارت ۱۶۰
پرسش
How can switching from one measured outcome to another create a gap?
پاسخ
Evidence about one metric may not support a conclusion about another. More website visits, for example, don't by themselves mean more sales.
کارت ۱۶۱
پرسش
What makes a source relevant to a claim?
پاسخ
It supplies evidence for a required link in the claim. Related background alone is not enough.
کارت ۱۶۲
پرسش
How do you solve a factored polynomial inequality reliably?
پاسخ
Find the zeros, split the number line into intervals, and test each interval's sign. Include a zero only when equality is allowed.
کارت ۱۶۳
پرسش
Does happening first prove causation?
پاسخ
No. The timing may fit a causal story, but coincidence or another cause can still explain the later event.
کارت ۱۶۴
پرسش
How can you spot an unsupported cross-source conclusion?
پاسخ
Identify the bridge between evidence and conclusion. If the sources never establish that bridge, the conclusion needs an assumption.
کارت ۱۶۵
پرسش
What do 0 = 0 and 0 = 5 mean after simplifying an equation?
پاسخ
0 = 0 means every allowed value is a solution; 0 = 5 means there is no solution.
کارت ۱۶۶
پرسش
What should you verify before comparing figures from different sources?
پاسخ
Common units and denominators. Convert first, then compare the same quantity on the same basis.
کارت ۱۶۷
پرسش
How do you interpret |x − a| < r when r is positive?
پاسخ
x is within r units of a: a − r < x < a + r.
کارت ۱۶۸
پرسش
What can a larger sample improve?
پاسخ
Precision, if the sampling method is sound. A huge biased sample can still give a confidently wrong picture of the population.
کارت ۱۶۹
پرسش
How should a cross-source recommendation be evaluated?
پاسخ
Apply the stated decision rule to the combined evidence. Do not substitute a personal preference for the rule.
کارت ۱۷۰
پرسش
If a worker finishes one job in t hours, what is the worker's hourly rate?
پاسخ
1/t of the job per hour.
کارت ۱۷۱
پرسش
What can an average hide?
پاسخ
The distribution. Two groups can share an average while differing sharply in range, concentration, or the number of extreme values.
کارت ۱۷۲
پرسش
What should you confirm before submitting a Multi-Source Reasoning answer?
پاسخ
That every required part is supported by the correct source and scope. One unsupported component can invalidate the whole decision.
کارت ۱۷۳
پرسش
How do you find the amount of a pure component in a mixture?
پاسخ
Concentration × total mixture amount. A 30% solution with volume 20 contains 0.30 × 20 = 6 units of the component.
کارت ۱۷۴
پرسش
What role does a concession usually play?
پاسخ
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.
کارت ۱۷۵
پرسش
When can an apparent cross-source discrepancy be resolved?
پاسخ
When a stated difference in scope or method explains both figures. If no bridge is given, keep the conflict open.
کارت ۱۷۶
پرسش
What is the two-set overlap formula?
پاسخ
In A or B = in A + in B − in both. Subtract the overlap because it was counted twice.
کارت ۱۷۷
پرسش
What should you identify first in Table Analysis?
پاسخ
The row unit, column definitions, and any notes. This establishes what one record and each value represent.
کارت ۱۷۸
پرسش
What is the fundamental counting principle?
پاسخ
Multiply the choices at successive stages when each stage has a fixed number of available choices.
کارت ۱۷۹
پرسش
Why distinguish relative change from absolute change?
پاسخ
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.
کارت ۱۸۰
پرسش
How should a table filter be translated?
پاسخ
Turn it into an exact inclusion rule. Apply every condition before counting or comparing rows.
کارت ۱۸۱
پرسش
For equally likely outcomes, what is the basic probability formula?
پاسخ
Favorable outcomes divided by total possible outcomes.
کارت ۱۸۲
پرسش
What makes a proposed causal mechanism useful?
پاسخ
It explains how the cause could produce the effect. A plausible, evidence-backed mechanism strengthens the causal link.
کارت ۱۸۳
پرسش
How do you find the median?
پاسخ
Order the values and take the middle value; for an even count, average the two middle values.
کارت ۱۸۴
پرسش
How should numeric values be sorted?
پاسخ
By numerical value, not digit order. For example, 12 comes after 9 in ascending order.
کارت ۱۸۵
پرسش
What is missed when evidence includes only successful cases?
پاسخ
The failures. Studying only surviving firms can make a strategy look safer or more effective than it is.
کارت ۱۸۶
پرسش
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?
پاسخ
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.
کارت ۱۸۷
پرسش
How should a table ratio be built when filters are involved?
پاسخ
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.
کارت ۱۸۸
پرسش
What quantity is conserved when two solutions are mixed without loss?
پاسخ
The amount of the pure component. Set the sum of the starting component amounts equal to the final component amount.
کارت ۱۸۹
پرسش
When may table rows be added directly?
پاسخ
Only when they are disjoint parts of the same measure and use compatible units. Overlapping groups would be double-counted.
کارت ۱۹۰
پرسش
What does n! mean for a positive integer n?
پاسخ
The product of the positive integers from 1 through n.
کارت ۱۹۱
پرسش
Where is the argument's logical gap?
پاسخ
Between the evidence and the conclusion. State what must connect them without merely repeating either side.
کارت ۱۹۲
پرسش
How do you find the number in neither of two sets?
پاسخ
Subtract the number in the union from the total population.
کارت ۱۹۳
پرسش
How should rates from table groups be combined?
پاسخ
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.
کارت ۱۹۴
پرسش
What is wrong with moving from some cases to all cases?
پاسخ
The conclusion is broader than the evidence. Evidence that some members have a trait doesn't show that every member does.
کارت ۱۹۵
پرسش
When should you use a permutation?
پاسخ
When selecting and arranging items and order matters. The number of ordered selections of r from n distinct items is n!/(n − r)!.
کارت ۱۹۶
پرسش
Why does table granularity matter?
پاسخ
A row-level fact may disappear or change after aggregation. Match the claim to the table’s level of detail.
کارت ۱۹۷
پرسش
How do you find the probability that an event does not occur?
پاسخ
1 − P(event). This is often the quickest route for “at least one” questions.
کارت ۱۹۸
پرسش
Why does a comparable control group help test causation?
پاسخ
It shows what happened without the suspected cause. If the groups differ mainly in that factor, the result is harder to explain another way.
کارت ۱۹۹
پرسش
How should missing table entries be treated?
پاسخ
As unknown unless the notes define another meaning. Exclude or include them only as the question directs.
کارت ۲۰۰
پرسش
What is the mode of a data set?
پاسخ
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.
کارت ۲۰۱
پرسش
What makes a table comparison valid?
پاسخ
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.
کارت ۲۰۲
پرسش
What should you check when a prediction extends a past pattern?
پاسخ
Whether the conditions behind the past pattern will continue. A trend alone doesn't show that its causes will remain in place.
کارت ۲۰۳
پرسش
How should a drain or other undoing process enter a work-rate equation?
پاسخ
As a negative rate. Add productive rates and subtract rates that reverse the work.
کارت ۲۰۴
پرسش
How can you avoid losing your place while scanning a table?
پاسخ
Evaluate one condition at a time and mark qualifying rows mentally or on the scratchpad. Count only after the final filter.
کارت ۲۰۵
پرسش
Can evidence that an outcome is possible show it is likely?
پاسخ
No. Possibility only shows that an outcome can occur; probability requires evidence about how likely it is.
کارت ۲۰۶
پرسش
What correction is needed when counting the union of three sets?
پاسخ
Add the three individual counts, subtract all three pairwise overlaps, then add the triple overlap back once.
کارت ۲۰۷
پرسش
When does a filtered table support a decision?
پاسخ
When the qualifying rows satisfy the stated rule. Keep filtering, calculation, and decision as separate steps.
کارت ۲۰۸
پرسش
When should you use a combination?
پاسخ
When selecting items and order does not matter. The number of selections of r from n distinct items is n!/[r!(n − r)!].
کارت ۲۰۹
پرسش
What must support a recommendation?
پاسخ
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.
کارت ۲۱۰
پرسش
How do AND and OR change a table filter?
پاسخ
AND requires every condition; OR requires at least one. Parenthesize mixed rules before scanning rows.
کارت ۲۱۱
پرسش
How do you find the probability that independent events both occur?
پاسخ
Multiply their probabilities: P(A and B) = P(A) × P(B).
کارت ۲۱۲
پرسش
What can make an alphabetical sort misleading?
پاسخ
Labels may contain categories or embedded numbers. Confirm whether the column is text, numeric, or chronological.
کارت ۲۱۳
پرسش
What kind of fact most directly strengthens an argument?
پاسخ
A fact that supports the missing link between evidence and conclusion. Merely repeating a premise adds little.
کارت ۲۱۴
پرسش
What is the range of a data set?
پاسخ
Maximum value minus minimum value.
کارت ۲۱۵
پرسش
What should you check at a filter cutoff?
پاسخ
Whether the boundary is inclusive. “At least 40” includes 40; “more than 40” does not.
کارت ۲۱۶
پرسش
A train covers 150 miles in 3 hours at a constant rate. What is its rate?
پاسخ
50 miles per hour. Rearrange distance = rate × time to get rate = 150 ÷ 3.
کارت ۲۱۷
پرسش
What is the most direct way to weaken an argument?
پاسخ
Undermine a necessary assumption connecting the evidence to the conclusion. The premises can remain true while the conclusion loses support.
کارت ۲۱۸
پرسش
What does a tie in the sorted column imply?
پاسخ
The tied rows share rank on that measure. Their display order does not create a performance difference.
کارت ۲۱۹
پرسش
How do you identify a useful evaluation question?
پاسخ
Test whether opposite answers would push the argument in opposite directions. If both answers leave the conclusion unchanged, the question isn't useful.
کارت ۲۲۰
پرسش
What should you identify first in Graphics Interpretation?
پاسخ
The chart type and what each visual encoding represents. Bars, lines, areas, and points support different readings.
کارت ۲۲۱
پرسش
How do repeated identical items affect arrangement counts?
پاسخ
For n total items, divide n! by the factorial of each repeated count. Identical items do not create new arrangements when swapped.
کارت ۲۲۲
پرسش
What should you read before estimating a plotted value?
پاسخ
Both axis labels, units, and category order. Position has meaning only after the axes are understood.
کارت ۲۲۳
پرسش
How do you test whether a statement is a necessary assumption?
پاسخ
Negate it. If that negation seriously damages the argument, the original statement was necessary.
کارت ۲۲۴
پرسش
How do you find the probability that one of two mutually exclusive events occurs?
پاسخ
Add their probabilities: P(A or B) = P(A) + P(B). Their overlap is zero.
کارت ۲۲۵
پرسش
What should you verify in a chart legend?
پاسخ
Which color, shape, or line maps to each series. Similar styling can otherwise swap the groups in your interpretation.
کارت ۲۲۶
پرسش
What does standard deviation measure?
پاسخ
How spread out values are around the mean. Greater dispersion means a larger standard deviation.
کارت ۲۲۷
پرسش
What standard should an inference meet?
پاسخ
It must follow from the given statements, without extra assumptions. Choose the modest claim the evidence guarantees.
کارت ۲۲۸
پرسش
What does a segment’s share depend on?
پاسخ
The correct whole. A category’s share of one region may differ from its share of the full dataset.
کارت ۲۲۹
پرسش
For motion along the same line, when do you add or subtract two speeds to get relative speed?
پاسخ
Add the speeds for opposite directions; subtract the smaller speed from the larger for the same direction.
کارت ۲۳۰
پرسش
What must a paradox explanation accomplish?
پاسخ
Make both surprising facts plausible at the same time. Rejecting either stated fact doesn't resolve the tension.
کارت ۲۳۱
پرسش
How is a segment in a stacked bar measured?
پاسخ
Subtract its lower boundary from its upper boundary. The upper endpoint alone is cumulative, not the segment value.
کارت ۲۳۲
پرسش
Eight students average 70 and twelve students average 80. What is the combined mean?
پاسخ
The group sizes are the weights: (8 × 70 + 12 × 80) ÷ 20 = 76.
کارت ۲۳۳
پرسش
What is the difference between a graph’s level and its rate of change?
پاسخ
Level is the plotted value; rate of change is the slope. A high line can still be falling.
کارت ۲۳۴
پرسش
How should you describe a statement's role in an argument?
پاسخ
Describe what it does, not just what it says. It may support the conclusion, present an objection, answer that objection, or illustrate a principle.
کارت ۲۳۵
پرسش
What is P(A given B)?
پاسخ
P(A and B) / P(B), provided P(B) > 0. Restrict the sample space to outcomes in B.
کارت ۲۳۶
پرسش
How should slope be compared across a graph?
پاسخ
Use change in vertical value divided by change in horizontal value. Visual steepness is reliable only on the same scales.
کارت ۲۳۷
پرسش
A driver covers equal distances at 30 mph and 60 mph. Is the average speed 45 mph?
پاسخ
No. Using 60 miles for each leg gives 120 miles in 3 hours, so the average speed is 40 mph.
کارت ۲۳۸
پرسش
What should you identify first when evaluating a plan?
پاسخ
The plan's exact goal and success measure. A proposal can produce benefits yet still fail its stated objective.
کارت ۲۳۹
پرسش
What does a trend in a scatterplot establish?
پاسخ
An association in the displayed data. It does not by itself establish causation or predict every individual point.
کارت ۲۴۰
پرسش
How can you strengthen a causal explanation?
پاسخ
Rule out a credible alternative cause, support the proposed mechanism, or show the effect changes when the proposed cause changes.
کارت ۲۴۱
پرسش
How can an outlier affect a graphical trend?
پاسخ
It can pull a summary line or average away from the main cluster. Check whether the claim concerns all points or the typical pattern.
کارت ۲۴۲
پرسش
Why do probabilities usually change when sampling without replacement?
پاسخ
The sample space changes after each draw. Update both the favorable count and the total before multiplying conditional probabilities.
کارت ۲۴۳
پرسش
One value in an n-value set increases by d. How does the mean change?
پاسخ
It increases by d/n because the total rises by d while the count stays fixed.
کارت ۲۴۴
پرسش
When does a counterexample weaken a claim?
پاسخ
When the claim requires the counterexample not to exist. One genuine exception can defeat an absolute claim, but may barely affect a modest one.
کارت ۲۴۵
پرسش
What is the parity of the sum of two odd integers?
پاسخ
Even. Each odd integer is one more than an even integer, so the two extra ones add to 2.
کارت ۲۴۶
پرسش
What can an aggregate graph hide?
پاسخ
Differences among subgroups or periods. A stable total can coexist with large offsetting changes inside it.
کارت ۲۴۷
پرسش
When is interpolation reasonable on a graph?
پاسخ
When the graph implies continuity between nearby points. Do not interpolate across separate categories.
کارت ۲۴۸
پرسش
What makes information relevant to evaluating an argument?
پاسخ
It bears on the uncertain link the conclusion depends on. Interesting facts about the topic may still be logically irrelevant.
کارت ۲۴۹
پرسش
How precise should a value read from a graph be?
پاسخ
Only as precise as the scale supports. Use a defensible interval when the mark falls between ticks.
کارت ۲۵۰
پرسش
Must a necessary assumption prove the conclusion?
پاسخ
No. It only has to be required for the argument to work; it need not be enough to establish the conclusion on its own.
کارت ۲۵۱
پرسش
How do you multiply positive numbers written in scientific notation?
پاسخ
Multiply the coefficients, add the powers of 10, then adjust the coefficient to be at least 1 and less than 10.
کارت ۲۵۲
پرسش
How should a graph-based decision be made?
پاسخ
Translate the visual into values or bounds, then apply the stated rule. Do not decide from appearance alone.
کارت ۲۵۳
پرسش
When is backsolving from answer choices especially useful?
پاسخ
When the choices are concrete values and direct algebra is slower than testing them in the original conditions.
کارت ۲۵۴
پرسش
How can axis scale distort a visual impression?
پاسخ
Unequal intervals or a truncated baseline can magnify or compress differences. Use tick values, not apparent distance alone.
کارت ۲۵۵
پرسش
When should you combine two statements for an inference?
پاسخ
When they share a term or relationship that creates a guaranteed consequence. Don't combine them through an unstated causal or statistical link.
کارت ۲۵۶
پرسش
When is a product of integers odd?
پاسخ
Only when every factor is odd. One even factor makes the entire product even.
کارت ۲۵۷
پرسش
What often resolves two apparently conflicting results?
پاسخ
A hidden difference in group, time, measurement, or conditions. The results may describe different slices of the situation.
کارت ۲۵۸
پرسش
How should equal distances on a logarithmic axis be interpreted?
پاسخ
As equal multiplicative changes, not equal absolute changes. Read the labeled values before comparing gaps.
کارت ۲۵۹
پرسش
Why start with a middle answer choice when backsolving ordered options?
پاسخ
Its result often eliminates half the choices at once when the relationship is monotonic.
کارت ۲۶۰
پرسش
What makes a Two-Part Analysis response complete?
پاسخ
Both selections must satisfy their own column prompts under the same stem. Treat the pair as one submitted response.
کارت ۲۶۱
پرسش
What is an analogy doing when it supports a claim?
پاسخ
It argues that because two cases share relevant features, a result or principle from one likely applies to the other.
کارت ۲۶۲
پرسش
How do you represent three consecutive odd integers?
پاسخ
n, n + 2, and n + 4, where n is an odd integer.
کارت ۲۶۳
پرسش
What should you identify before solving Two-Part Analysis?
پاسخ
The role of each column. One may ask for a condition while the other asks for a consequence or decision.
کارت ۲۶۴
پرسش
What values should you test first in a claim about an unspecified number?
پاسخ
Test allowed categories that may behave differently: positive, negative, zero, fractional, and boundary values.
کارت ۲۶۵
پرسش
How can an unchanged bottleneck defeat a plan?
پاسخ
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.
کارت ۲۶۶
پرسش
How does the shared stem affect the two parts?
پاسخ
Its definitions and constraints apply to both. Keep them fixed while testing each column’s requirement.
کارت ۲۶۷
پرسش
How do you count the positive divisors of an integer greater than 1 from its prime factorization?
پاسخ
Add 1 to each prime exponent, then multiply those results.
کارت ۲۶۸
پرسش
In Two-Part Analysis, must the two selected entries be the same?
پاسخ
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.
کارت ۲۶۹
پرسش
What makes evidence for a general claim strong?
پاسخ
It should be relevant and reliable and, if case-based, come from representative cases. More evidence isn't automatically better evidence.
کارت ۲۷۰
پرسش
How do you factor a difference of squares?
پاسخ
Use x² − y² = (x − y)(x + y).
کارت ۲۷۱
پرسش
When should the two Two-Part Analysis selections be solved together?
پاسخ
When one shared relationship constrains both. Test candidate pairs against that relationship instead of solving isolated fragments.
کارت ۲۷۲
پرسش
How can one counterexample evaluate a universal claim?
پاسخ
One valid counterexample disproves a claim that is supposed to hold for every allowed value.
کارت ۲۷۳
پرسش
How does an alternative explanation weaken a conclusion?
پاسخ
It shows that the evidence can be true without the proposed explanation being true. The alternative must account for the same result.
کارت ۲۷۴
پرسش
In Two-Part Analysis, how can one column help solve the other?
پاسخ
A valid selection can narrow the remaining candidates when the parts share a constraint. Recheck the final pair in both columns.
کارت ۲۷۵
پرسش
How do you test whether x² + bx + c factors into integer binomials?
پاسخ
Look for integers r and s with r + s = b and rs = c. If they exist, the factorization is (x + r)(x + s).
کارت ۲۷۶
پرسش
Which unknown should you evaluate first in a plan argument?
پاسخ
A condition that could make the plan achieve or miss its goal. Focus on feasibility, response, costs, and side effects tied to that goal.
کارت ۲۷۷
پرسش
How should a trade-off between two measures be evaluated?
پاسخ
Apply the stated priorities or limits. An option is better only relative to the rule, not because one measure is largest.
کارت ۲۷۸
پرسش
How can estimation screen answer choices before exact calculation?
پاسخ
Approximate the expression's magnitude, then eliminate choices that are far too large or too small.
کارت ۲۷۹
پرسش
In a constrained-decision Two-Part Analysis problem, what should you check before comparing candidates?
پاسخ
Check every hard constraint first. Discard any option that breaks a required limit, then compare only the feasible candidates.
کارت ۲۸۰
پرسش
What does a defensive assumption do?
پاسخ
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.
کارت ۲۸۱
پرسش
What restriction applies when a variable appears in a denominator?
پاسخ
Exclude every value that makes the denominator zero.
کارت ۲۸۲
پرسش
How does an objective differ from a constraint?
پاسخ
A constraint determines what is allowed; an objective ranks the allowed options. Apply them in that order.
کارت ۲۸۳
پرسش
Which quick checks catch many Quant answer errors?
پاسخ
Check the sign, units, allowed range, and rough size against the question's conditions.
کارت ۲۸۴
پرسش
What inference is safe from a statement about most members?
پاسخ
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.
کارت ۲۸۵
پرسش
How should a two-part threshold rule be handled?
پاسخ
Translate each threshold with the correct inequality, including its boundary. Then test both selected values against it.
کارت ۲۸۶
پرسش
Where can one negative sign appear in a fraction without changing its value?
پاسخ
Before the fraction, in the numerator, or in the denominator: −(a/b) = (−a)/b = a/(−b), provided b ≠ 0.
کارت ۲۸۷
پرسش
How does an argument choose between competing explanations?
پاسخ
It presents evidence that one explanation handles better than the others, often by ruling out a rival prediction.
کارت ۲۸۸
پرسش
What is an efficient way to handle two linked algebraic targets?
پاسخ
Express both in terms of one variable or invariant. Evaluate candidate values only after the relationship is clear.
کارت ۲۸۹
پرسش
How do you solve x² = c over the real numbers?
پاسخ
If c > 0, x = ±√c; if c = 0, x = 0; if c < 0, there is no real solution.
کارت ۲۹۰
پرسش
What should you check when two selected quantities form a ratio?
پاسخ
Order and scale. The ratio A:B is not interchangeable with B:A, and proportional pairs may all fit.
کارت ۲۹۱
پرسش
How does a positive proper fraction compare with 1?
پاسخ
It is less than 1 because its numerator is smaller than its denominator.
کارت ۲۹۲
پرسش
Which side effects matter when evaluating a plan?
پاسخ
Effects that change the plan's net result or work against its goal. A small unrelated inconvenience usually doesn't matter.
کارت ۲۹۳
پرسش
How should a two-part logical claim be tested?
پاسخ
Separate the condition from the conclusion, then test whether each selected statement performs the requested role.
کارت ۲۹۴
پرسش
What is the solution pattern for |x| = a over the real numbers?
پاسخ
If a > 0, x = ±a; if a = 0, x = 0; if a < 0, there is no real solution.
کارت ۲۹۵
پرسش
What unit check belongs in a two-part quantitative answer?
پاسخ
Confirm that each selection has the unit requested by its column. Linked values may require different conversions.
کارت ۲۹۶
پرسش
Why does user response matter to a plan?
پاسخ
The plan may depend on people adopting, following, or not avoiding it. Availability alone doesn't guarantee the needed behavior.
کارت ۲۹۷
پرسش
A response rate rises from 40% to 50%. What are the percentage-point change and the relative percent increase?
پاسخ
The increase is 10 percentage points and 25% relative to the original rate: (50 − 40) ÷ 40 = 0.25.
کارت ۲۹۸
پرسش
What is the final check for Two-Part Analysis?
پاسخ
Read each column prompt with its chosen entry, then verify that the pair is jointly consistent with the stem.
کارت ۲۹۹
پرسش
For real x and y, what two linear cases are equivalent to x² = y²?
پاسخ
x = y or x = −y.
کارت ۳۰۰
پرسش
How should benefits and costs be compared in a plan argument?
پاسخ
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.

۳۰۰ کارت

GMAT Flashcards: Quant, Verbal & Data Insights Decisions

این دسته را رایگان مطالعه کنید

Nibomo باز می‌شود تا بتوانید مطالعه را شروع کنید.

دربارهٔ این دسته

GMAT Flashcards: Quant, Verbal & Data Insights Decisions

What the cards map

Learning order

Current-format boundary

کارت‌های این دسته

کارت ۱

کارت ۲

کارت ۳

کارت ۴

کارت ۵

کارت ۶

کارت ۷

کارت ۸

کارت ۹

کارت ۱۰

کارت ۱۱

کارت ۱۲

کارت ۱۳

کارت ۱۴

کارت ۱۵

کارت ۱۶

کارت ۱۷

کارت ۱۸

کارت ۱۹

کارت ۲۰

کارت ۲۱

کارت ۲۲

کارت ۲۳

کارت ۲۴

کارت ۲۵

کارت ۲۶

کارت ۲۷

کارت ۲۸

کارت ۲۹

کارت ۳۰

کارت ۳۱

کارت ۳۲

کارت ۳۳

کارت ۳۴

کارت ۳۵

کارت ۳۶

کارت ۳۷

کارت ۳۸

کارت ۳۹

کارت ۴۰

کارت ۴۱

کارت ۴۲

کارت ۴۳

کارت ۴۴

کارت ۴۵

کارت ۴۶

کارت ۴۷

کارت ۴۸

کارت ۴۹

کارت ۵۰

کارت ۵۱

کارت ۵۲

کارت ۵۳

کارت ۵۴

کارت ۵۵

کارت ۵۶

کارت ۵۷

کارت ۵۸

کارت ۵۹

کارت ۶۰

کارت ۶۱

کارت ۶۲

کارت ۶۳

کارت ۶۴

کارت ۶۵

کارت ۶۶

کارت ۶۷

کارت ۶۸

کارت ۶۹

کارت ۷۰

کارت ۷۱

کارت ۷۲

کارت ۷۳

کارت ۷۴