Brain Teaser

Question You drop a stack of three balls. The bottom ball is the heaviest, with the middle ball much lighter and the top ball much

Solve

Question Jaz makes circular necklaces by stringing black and gold beads together. She wants to count how many different necklaces

Solve

Question At a university, the portraits of its 50 presidents line a hallway of the student center. Every year, 50 students pull th

Solve

Question Your goal is to measure out 7 liters of water. You have one empty 12-liter container, and you may choose one other contai

Solve

Question There are x regular polygons, all with n sides of length 1 arranged in a row as the triangles, squares, and pentagons are

Solve

Question In a grassy field, a goat is tethered by a rope with length 6 to the corner of a rectangular shed with side lengths 4 and

Solve

Question Look at the program above:   Imagine running this program 21 times, with each of the integers from -10 to 10 as the

Solve

Question Only one-digit numbers can start with a zero. If every letter corresponds to a different digit, what is A+B+C+D? 5 9 19 2

Solve

Question The mobile shown is balanced. Karen is quite happy with her perfectly balanced mobile.   Karen’s friend Juli i

Solve

Question The yellow pentagon is inside of a rectangle. What is the yellow-shaded area? 52 68 72 74 80

Solve

Question The outer figure is a square and the line from each vertex bisects its opposite side. What is the area of the central whi

Solve

Question Alma, Baptiste, and Cadence equally share eighteen identical springs, and each person designs their own spring system for

Solve
1 2 13 14 15 18 19

Become a Member

Join the MIT Club of Nothern California today!

Member is open to all MIT graduates.

Join Now!