Brain Teaser

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

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

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

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

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

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

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Question The three larger squares meet at the center of the small square. How much of the small square is colored? ⅙ ¼ ⅓ ⅜

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Question The reflector of a long-distance parabolic microphone has a diameter of 2 m and a depth of 0.5 m. How far from the base o

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Question Julius has three empty, unmarked containers: one that holds 4 liters, one that holds 6 liters, and one that holds 9 liter

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Question pilot flies her plane so that it is always headed at a 100º angle from her line of sight to her house. Which shape best

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Question The base of the pink triangle is one third of the square’s side length. If the square has an area of 12, what is th

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