Brain Teaser

Question Dorian wants to build a rectangular-shaped house on a plot of circular land with radius 6. What is the largest possible a

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Question Anika is training for a running competition. At first, she jogs with a constant speed of 4 m/s. Then, for the last 60 m o

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Question You’re given four boxes, each containing three gold/silver coins as shown. You pick one box at random and remove on

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Question What is the largest number of statements below that can be simultaneously true? All the statements below this one are fal

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Question 512 small cubes are arranged into a larger 8×8 cube, and then the outside of the larger cube is painted. Some of the sma

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Question Bjorn holds two water balloons on a platform from 20 m high. As he throws one of the balloons straight down, the other on

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Question After a tennis match, the four players got their gear mixed up. Each player accidentally took the racket of one player an

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Question From which point should we support the pictured mobile to make it hang balanced? A B C D It isn’t possible to balan

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Question You have two large containers — one that holds 40 liters and the other that holds 56 liters.   You’ve been t

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Question How many four-digit numbers can we create by rearranging digits of 2021? All four of the digits must be used exactly once

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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

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

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