Brain Teaser

Question Here is an algorithm to check whether a sequence is already sorted (it is not a sorting algorithm): Starting from the lef

Solve

Question The green, leaf-shaped area shown is the region of overlap between two circles of radius 2 that are centered, respectivel

Solve

Question A rectangle is inscribed in a right triangle. What is the area of the orange rectangle? 27 30 35 36 The area cannot be de

Solve

Question You need to make one liter of 60% alcohol solution, but you only have 30% and 70%. How much of the 70% solution do you ne

Solve

Question Mei and Yuri are playing a subtraction game, with the following rules: Together, they select a positive integer N. The fi

Solve

Question In the candy-making process, sugars like glucose and sucrose transform in a process called caramelization to make harder,

Solve

Question The disks shown can be moved from peg to peg according to the following rules: Only one disk can be moved at a time. Each

Solve

Question The 3 puzzle pieces shown fit into the 4 x 4 grid without reflection or rotation. You have these clues: G touches M (they

Solve

Question Which of these two lattice triangles has the larger area? A has the larger area. B has the larger area. A and B have the

Solve

Question Pete and Dave are neighbors. They use identical bricks to build fences around their square-shaped yards. Pete uses 1,000

Solve

Question You’re driving at a speed of 10 m/s toward a traffic light 60 m away when it turns yellow. It will turn red in 5 s,

Solve

Question The four triangles’ areas are labeled. There are two rectangles in the figure, and every triangle side length is an

Solve
1 2 3 4 5 18 19

Become a Member

Join the MIT Club of Nothern California today!

Member is open to all MIT graduates.

Join Now!