by ApexGMAT | Mar 11, 2021 | Combinatorics, GMAT, Probability, Quant

By: Rich Zwelling, Apex GMAT Instructor Date: 11th March, 2021 In our last post, we discussed a solution for the following question, which is a twist on an Official Guide GMAT probability problem: Xavier, Yvonne, and Zelda individual probabilities for success on a...
by ApexGMAT | Mar 9, 2021 | GMAT, Probability, Quant

By: Rich Zwelling, Apex GMAT Instructor Date: 8th March, 2021 Independent vs. Dependent Probability As promised last time, we’ll return to some strict GMAT probability today. Specifically, we’ll discuss the difference between independent and dependent probability....
by ApexGMAT | Feb 9, 2021 | Geometry, GMAT, Quant

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,...
by ApexGMAT | Feb 2, 2021 | Geometry, GMAT, Quant

Triangles, and Geometry in general, are something you need to master as much as you can before your GMAT exam. It can seem complicated in the beginning, but once you start working with different geometric objects and its shapes, thing will definitely get easier. The...