The GMAT Permutations and Combinations Guide

Permutations and Combinations suck. We all know it.

Counting problems (Combinatorics) are some of the most irritating questions that the GMAT has to offer, not in the least because these questions are things you most likely never even covered in high school!

The best thing about Permutations and Combinations is that with a few simple tricks, you'll see that they're really not about complex calculations at all--there are really only three calculations you'd be expected to perform!--but they insist that you plan your approach carefully. 

Even better? You can forget all about that n!/(r!(n-r)!) nonsense.

There's a better way. And this guide will teach you.