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Tag Archives: GMAT Quantitative


GMAT Quantitative Errors: Understanding Incorrect Answers

When most people miss a GMAT quant question, the ensuing chain of events tends to be some version of the following: refer to the answer explanation, make sure they understand the explanation, re-do the question, and move on to the next question. Though such an approach certainly benefits test-takers whose only issue is conceptual, it grossly oversimplifies the numerous factors involved in the problem-solving process….

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GMAT Critical Reasoning vs Data Sufficiency: Two Sides of the Same Coin

Traditional GMAT wisdom suggests that the skills needed for success on the Verbal section overlap little, if at all, with one’s quantitative abilities. Given our educational system and the very fact that the GMAT has separate Quantitative and Verbal sections, such a distinction seems uncontroversial and downright obvious. But, as we all know, the structure and content of the GMAT can often run against our…

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GMAT Timing Tip: The Sunk Cost Fallacy

When students call me to discuss issues they’ve been having in their preparation, one of the most common concerns I hear is timing. Be it on practice tests or on the real thing, basically all GMAT test-takers experience a time crunch at some point during the test, if not throughout the entire exam. Now, if you’re nodding your head vigorously in agreement and expect some…

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Factoring Exponential Expressions

Most of the time on the GMAT, manipulations with exponents are fairly straightforward. Usually, you’ll see two terms with a common base, and you’ll be expected to divide or multiply those terms (such as: 25 / 23 or 35 x 38). However, when you get to some of the higher-level questions, you’ll be expected to handle situations in which none of the exponent rules that you’ve learned will apply….

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Factoring Exponential Expressions

Most of the time on the GMAT, manipulations with exponents are fairly straightforward. Usually, you’ll see two terms with a common base, and you’ll be expected to divide or multiply those terms (such as: 25 / 23 or 35 x 38). However, when you get to some of the higher-level questions, you’ll be expected to handle situations in which none of the exponent rules that you’ve learned will apply….

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GMAT Data Sufficiency: Breaking Your Assumptions

One of the most widespread mistakes I see students make on Data Sufficiency concerns the information they consider when evaluating a statement. To properly determine whether a statement is sufficient, you must be focused on using only the information given. If, for example, a statement only tells you that -10 < x < 10, but says nothing else, then you can’t assume that x is an integer, and you…

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GMAT Shortcuts

An enduring myth among many test-takers (GMAT and otherwise) is that standardized test preparation is simply a matter of memorizing a few rules and shortcuts and implementing these tricks on test day. This belief is only reinforced by large test-prep companies like The Princeton Review and Kaplan, whose curriculum is oriented around such superficial techniques. Unfortunately, I’ve had to break the news to a few…

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The Logic of GMAT Data Sufficiency

I recently received an e-mail from someone undergoing a mini-crisis over GMAT Data Sufficiency. I’ve decided to share the e-mail and my thoughts with the GMAT world: “… so critical reasoning isn’t much of a problem, nor is problem solving. But I can’t, for the life of me, wrap my mind around data sufficiency. And, really, I don’t understand why it appears on the GMAT….

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The Logic of GMAT Data Sufficiency

I recently received an e-mail from someone undergoing a mini-crisis over GMAT Data Sufficiency. I’ve decided to share the e-mail and my thoughts with the GMAT world: “… so critical reasoning isn’t much of a problem, nor is problem solving. But I can’t, for the life of me, wrap my mind around data sufficiency. And, really, I don’t understand why it appears on the GMAT….

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