GMAT Divisibility Rules

GMAT Divisibility Rules

Welcome back to our series on number properties. Last time we got familiar with prime factors as the substance of divisibility. In this article, we will extend this understanding by highlighting logical rules that sometimes come into play on GMAT number properties...
A Primer on Primes

A Primer on Primes

By: Rich Zwelling (Apex GMAT Instructor) Date: 30th March 2021 As I said in my previous post, GMAT Prime Numbers are my favorite topic. This is because not only are they inherently interesting mathematically but they show up in unexpected circumstances on GMAT...