Bases Between -1 and 1

Bases Between -1 and 1

Many GMAT and Executive Assessment (EA) exponent problems – especially data sufficiency ones – require you to consider fractional bases. By this I mean proper fractions with values between -1 and 1, not improper fractions whose numerators exceed their...
One on One GMAT Tutoring – Clients’ Perspective

One on One GMAT Tutoring – Clients’ Perspective

For many people self-prepping for the GMAT for months on end leads to middling results. This can be discouraging and frustrating. Oftentimes, people preparing for the GMAT do not consider using a one-on-one GMAT tutor until it’s too late. Seeing improvement in your...
Should You Hire An Expensive GMAT Tutor?

Should You Hire An Expensive GMAT Tutor?

By: Apex GMAT Contributor: Ivan Minchev Date: 1 July, 2021 The GMAT is a relatively different exam from what most people would expect. It requires a more involved approach when it comes to preparation. There’s a whole array of ways one can prepare for the GMAT, such...
Permutations with Restrictions

Permutations with Restrictions

By: Rich Zwelling, Apex GMAT Instructor Date: 2nd March, 2021 So far, we’ve covered the basics of GMAT combinatorics, the difference between permutations and combinations, some basic permutation and combination math, and permutations with repeat elements. Now, we’ll...
Triangle Inequality Rule

Triangle Inequality Rule

One of the less-common but still need-to-know rules tested on the GMAT is the “triangle inequality” rule, which allows you to draw conclusions about the length of the third side of a triangle given information about the lengths of the other two sides. Often times,...