After reading a few solutions in various GMAT Data Sufficiency forums, one notices that sometimes people plug in values to test sufficiency, and sometimes they use a different (often algebraic) approach. So, how do we identify those times...

In a recent article, I discussed my concern regarding the term “permutation.” In this article, I’ll discuss my concern regarding the question, “Does order matter?” People often use this question to help determine whether to use...

In my previous article, I mentioned that the Fundamental Counting Principle (FCP) can be used to solve most GMAT counting questions. The FCP says:
If a task can be completed in stages, where one stage can be accomplished in A ways,...

I’ve never been a big fan of the phrase “Combinations and Permutations.” It suggests that all counting questions can be solved using either combinations or permutations, when this is not so. Compounding the problem is an infamous rule that...

Most GMAT students don’t spend enough time considering the mindset they’ll need on test day. In my very first article, I suggested that the simple act of smiling can increase your performance. In this article, we’ll go a little deeper and...

To set up this article, please consider a forum post from some fictitious wrestling forum:
The state wrestling tournament is 1 month away, and I want to win the 184-pound weight class. To lose enough weight to qualify for that weight class...

Welcome to part three of a three-part series on common mistakes that students make when answering GMAT Data Sufficiency questions.
In this article, we’ll examine two mistakes related to equations.
Mistake #1 – Assuming that 2 equations...

Welcome to part two of a three-part series on common mistakes that students make when answering GMAT Data Sufficiency questions.
In this article, we’ll examine mistakes related to assumptions about number classifications.
Mistake #1 -...

Doing well on the GMAT is a key part of your MBA admissions. It’s split into four parts: analytical writing (30 minutes), integrated reasoning (30 minutes), quantitative (75 minutes) and verbal (75 minutes). Your chances of getting into...

Welcome to part one of a three-part series on common mistakes that GMAT students make when answering Data Sufficiency questions.
In this article, we’ll examine two kinds of mistakes that GMAT newcomers often make, and in the next two...