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Number Puzzle #42- Monkey And The Coconuts -

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Puzzle Image Three sailors come across a pile of coconuts. The first sailor takes half of them plus half a coconut. The second sailor takes half of what is left, plus half a coconut. The third sailor also takes half of what remains, plus half a coconut. Left over is exactly one coconut, which they toss to a monkey.

How many coconuts were in the original pile?

Credit: This puzzle, created by Martin Gardner in 1961, is a simplified version of a more difficult puzzle by Ben Ames Williams published in 1926.
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