The Doctor’s Son

Brain Teasers

Below is a classic brain teaser that plays some of the same tricks that one sees on standardized tests, especially the GMAT and GRE. A boy is walking down the road with a doctor. While the boy is the doctor’s son, the doctor isn’t the boy’s father....

Find the Animal

Brain Teasers

In each of the sentences below, the name of an animal is concealed. The first sentence is marked so that you can see how the word “dog” is hidden. See if you can find the animal hidden in each of the other sentences! What shall I do, Gertrude? Asking nutty questions...

Round Trip Challenge

Brain Teasers

We love helping people think critically and solve problems—skills that are key to test success and beyond! This month’s brain teaser is a classic. Enjoy! If a car drives the 60 miles from San Jose to San Francisco at an average speed of 30mph, at what average speed...

Two For One

Brain Teasers

We recently highlighted the legendary Martin Gardner, a well-known author of riddles and puzzles. Below we share two of his brain teasers. Below, we’re excited to share two of his classic brain teasers. Dive in and enjoy the fun! THE MISPELLED WORD Somewhere on this...

Colored Pencils

Brain Teasers

Ben has 30 pencils in a box. Each of the pencils is one of 5 different colors, and there are 6 pencils of each color. If Ben selects pencils one at a time from the box without being able to see the pencils, what is the minimum number of pencils that he must select in...