Brain Teaser

Question Suppose a motocross rider is in the middle of performing a double backflip when they realize that their rotation is going

Solve

Question A centered hexagonal number is a figurate number that forms a regular hexagon. It is constructed with a single dot at the

Solve

Question The 16×24 rectangle shown is cut up into triangles, 3 of which have perimeters of 48, 36, and 56, as indicated by the nu

Solve

Question In this challenge, you can replace any number in the grid below with a 0. How many numbers in the grid must be replaced w

Solve

Question If we draw a line connecting the corners of a 32×40 grid, how many 1×1 squares does it cut through? 64 67 71 72 Like th

Solve

Question In New Math City (NMC), streets follow a square grid with integer coordinates. The distance between any two points is com

Solve

Question Sam and Rafael are playing a game in which they flip a coin repeatedly, comparing the sequence of results to the alternat

Solve

Question A Sarai takes her dog Seamus to the veterinarian and is given two different medications: When they get home at 12:00, Sar

Solve

Question A cuboctahedron is a polyhedron with 8 triangular faces and 6 square faces with two squares and two triangles meeting at

Solve

Question Paul and Robert are preparing a present for their brother’s birthday. If they work together, it’ll take them

Solve

Question You have one container that holds 15 liters and another that holds 9 liters. You may only use these moves: completely fil

Solve
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