Last time, we talked about how to Test Cases on Data Sufficiency (DS) questions. ( If you haven’t read the first installment yet, go do that now. ) Today, you’re [...]

The Executive Assessment (EA) shares a lot of roots with the GMAT, GMAC’s flagship graduate business school exam. The Quant section covers almost all of the same material and uses [...]

How well do you know how to decipher the key clues that the test writers hide in GMAT problems? To get a really high score on this test, you’ve got [...]

In the first installment of this series, we talked about an overall process that allows you to work methodically and make sure that you’re performing the necessary analysis to give [...]

Data Sufficiency problems are fantastic because you can avoid doing lots of math calculations! Data Sufficiency problems are really annoying because they’re so tricky; it’s very easy to fall into [...]

Welcome to the 3 rd and final installment of our mini-series on Number Properties. We’ve been doing a deep dive into Divisibility and Prime issues (see Part 1 and Part [...]

Welcome to the 2 nd installment of our dive into Number Properties. If you haven’t yet tried the first problem, start with the first article in the series . Let’s dive [...]

Most of my students are driven crazy by Number Properties. On the face of it, the topic seems straightforward: I know what positive and negative, odd and even are. Divisibility [...]

Last time , we talked about how crucial it is to develop the instinct to go for the “No” when taking the GMAT. If you haven’t read the first installment , [...]

Recently, a colleague of mine shared this very interesting puzzle published by The New York Times . (Thanks, Ceilidh!) Go ahead and try it. I’ll wait. After you’ve tried the puzzle, [...]

Try this problem from the free problem sets that come with the GMATPrep® software and see whether you can spot the most efficient solution. Here is the problem:   * “If a [...]

A few months ago, I wrote a couple of articles targeted toward those students looking for a super-high score (one for quant , one for verbal ). I challenged students [...]

A certain class of questions tends to have more going on than might be apparent on the surface. (I’m being intentionally vague as to the “certain class” – I’ll tell [...]

Recently, I gave you a GMATPrep® question and started out by asking “What is this thing, anyway?” I’ve got another one (along similar lines) for you this week (also a [...]

What are number properties? This concept covers things that we often call “basic” – topics that we learned in middle school (or earlier): divisibility, factors and multiples, odds and evens, [...]

Today we’re going to tackle a couple of tough divisibility problems from GMATPrep®. The two problems I’ve chosen share some interesting characteristics. Here’s your first one; set your timer for [...]

Here is a new Challenge Problem! If you want to win prizes, try entering our Challenge Problem Showdown . The more people that enter our challenge, the better the prizes! [...]

Here is a new Challenge Problem! If you want to win prizes, try entering our Challenge Problem Showdown . The more people enter our challenge, the better the prizes! Question [...]

Here is a new Challenge Problem! If you want to win prizes, try entering our Challenge Problem Showdown . The more people enter our challenge, the better the prizes. Question [...]

This week, we’re all about number lines: how to think about them and how to avoid traps. I think this one is deceptively tricky. Don’t say you haven’t been warned! Let’s [...]

This week, we’re going to talk about what to know for consecutive integer problems, and how to recognize what to do on future problems of the same type. This one is [...]

We’re making sections of  Grockit’s GMAT Course available to stream online for free! The course is taught by Grockit Founder Farb Nivi and covers the entire GMAT curriculum in 16 [...]

We’re making sections of  Grockit’s GMAT Course available to stream online for free! The course is taught by Grockit Founder Farb Nivi and covers the entire GMAT curriculum in 16 [...]

We’re making sections of  Grockit’s GMAT Course available to stream online for free! The course is taught by Grockit Founder Farb Nivi and covers the entire GMAT curriculum in 16 [...]

[youtube]http://www.youtube.com/watch?v=bLPq4AcH-bc[/youtube] Get ready for a GMAT adventure! Just hit play, choose your question (and teacher!) and see if you can click your way to the right answer. You'll get a fun bonus video [...]