Here are two hilarious — but mathematically GRE-like — problems written by Manhattan GRE instructor Tommy Wallach.

As on the real GRE, both questions use the same set of two charts. The first question is multiple choice; the second requires you to enter your own answer. You may use a calculator.

You can read the rest – and get the answers – on the Manhattan Prep blog!

Also, check out this new Tumblr: Hipster GRE Word of the Day. Because hipsters need to study too.