This post discusses a strategy for simplifying complex mathematical expression on the GMAT Quantitative section.  Consider the following very challenging Data Sufficiency question.   1. What is the value of x? Take a moment to wrestle with this before reading this article, in which we will explain how to approach...

In the first three articles in this series on GMAT probability questions, I discussed the AND and OR probability rules,  ”at least” probability questions, and probability questions that involve counting.  This post covers relatively rare kind of probability question not covered in the first three posts: geometric probability questions.  First,...

The short answer: VERY.  Admittedly, idioms alone are not the single biggest tested topic on the GMAT Sentence Correction.  Of course, I would recommend studying all grammatical and syntactical rules, not merely idioms in isolation.  Nevertheless, there are rumors swirling around on the web to the effect that...

Few topics make students let out an audible sigh like circles on the GMAT. “What was the formula for area of a circle, again? I know pi is in there somewhere!” Then they throw sectors, proportions, and arclengths at you. Now you’re really rolling your eyes. Slicing...

It is not uncommon for test takers, when sloughing through the thicket of GMAT Sentence Correction questions to find themselves scratching their heads over a tricky little grammar conundrum known as  an absolute phrase. What exactly are absolute phrases you ask? Well, before we dive into definitions and...

Prepositions in English display a powerful diversity of uses. Your preposition knowledge will most certainly be tested in the GMAT. In previous preposition article, we talked about the proposition “against”.  Here, we will look, at the preposition “on”.   Prepositions on the GMAT A preposition must be followed by...

Prepositions in English display a powerful diversity of uses.  In previous preposition article, we talked about the proposition “for”.  Here, we will look, at the prepositions “against”.   Prepositions A preposition must be followed by a noun — or by something playing the role of a noun.   This latter...

“Fred wrote to Congress to complain about this policy nearly four months before Silvia ____________” What we want to say is — Fred wrote to Congress, and Silvia also wrote to Congress, but Fred did what he did before Silvia did what she did.  The question...

First, try these challenging GMAT Quantitative problems, all variations on a theme, as you will see. 1) Seven children — A, B, C, D, E, F, and G — are going to sit in seven chairs in a row.  The children C & F have to...

To start, consider these practice GMAT Sentence Correction questions. 1) The Senator’s warm recommendation of the popular Congressman seemed to many an implication that he will not see re-election to his current office. an implication that to make the implication to imply that as if implying to make implicit that 2) Five-star General John Pershing had such...