The Grey Labyrinth is a collection of puzzles, riddles, mind games, paradoxes and other intellectually challenging diversions. Related topics: puzzle games, logic puzzles, lateral thinking puzzles, philosophy, mind benders, brain teasers, word problems, conundrums, 3d puzzles, spatial reasoning, intelligence tests, mathematical diversions, paradoxes, physics problems, reasoning, math, science.

   

Pyramid Construction 101

The block moves about four cubits, or a little over two yards. If you were thrown off by this deceptively simple problem, you probably forgot that while a point on the circumference of the roller moves two cubits relative to a point on the ground per rotation, that point on the roller also moves two cubits relative to a point on the block.

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