Pairing Students…Perfectly!

Brain Teasers

Once again we dip into official test questions for our monthly brain teaser! This one is an actual ACT question. If you struggle with it, take comfort in knowing that this one took me longer than I’d like to admit (I saw this question on an actual ACT that I took with...

Interest Rate

Brain Teasers

In this month’s “brain teaser,” we present an official GMAT question. While thinking about this question, it’s critical to remember/understand that the GMAT does not allow a calculator on the Quantitative Section, so this question must be able to be solved without...

Weighing Bricks

Brain Teasers

This month’s brain teaser comes from one of our students! It’s a question that one of her colleagues asks people in job interviews. So, lest you think that pondering brain teasers (especially confusingly worded and seemingly inane ones like the below) are a...

A Test of Reasoning, Not Math

Brain Teasers

Below we once again share an official GMAT question as our monthly brain teaser. Like many difficult GMAT and GRE questions, and even like many of the most difficult SAT/ACT questions, this one shares a lot in common with brain teasers. The question looks very...

The Two Barbershops

Brain Teasers

A traveller arrives in a small town and decides to get a haircut. There are only two barbershops in town: one on East Street and one on West Street. The East Street barbershop is a mess, and the barber has the worst haircut the traveller has ever seen. The West Street...