Brain Teaser

Question You have one container that holds 15 liters and another that holds 9 liters. The larger container already has 11 liters o

Solve

Question Areas Each number inside a colored region is the area of that region. What is the value of x? 17 18 19 20

Solve

Question The four puzzle pieces in the image fit into the 4×4 grid without rotation or reflection. Based on these clues, find

Solve

Question The fuel used to propel spaceships can’t depend on atmospheric oxygen as a reactant, since they might not be operat

Solve

Question Your twin leaves you on Earth and flies away at 0.8c0.8c0.8c, then turns around nearly instantaneously and returns at the

Solve

Question Angles of the same color have the same measure. What is the measure of the green angle? 30° 35° 40° 45°

Solve

Question A young mouse is weighing an important decision.   The sound of human footsteps is approaching, and the mouse needs

Solve

Question How many squares in this grid contain the orange square? 14, 18, 19, 55  

Solve

Question Each letter stands for a distinct digit, and if letters are different, so are the digits they represent. What digit is E?

Solve

Two trains, each traveling at a speed of are headed toward each other on the same track. At the exact moment the trains are apart,

Solve

Art gallery problems involve finding an unmoving guard (or guards) who can “see” the entire gallery. A guard is able t

Solve

Can Area Reveal Volume? Consider the two shapes inside the two identical cylinders whose radius is equal to its height.

Solve
1 2 17 18 19 20

Become a Member

Join the MIT Club of Nothern California today!

Member is open to all MIT graduates.

Join Now!