offers hundreds of practice questions and video explanations. Go there now.

Sign up or log in to Magoosh GRE Prep.

Archive | Math Brain Twister

GRE Brain Twister: A Prime Example

Here’s this month’s GRE Brain Twister! Try to answer it in the comments below, and we’ll post the answer on Thursday! A math teacher assigns a distinct prime number, starting with the lowest, for each student in her class. If she chooses two students at random, the probability the sum of their numbers is not […]

Continue Reading · 7