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Marble pyramids

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bbrown88 | 05:50 Tue 05th Oct 2004 | Quizzes & Puzzles
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An anonymous New Yorker recently acquired a very large number of marbles. So many, that he had enough to give two marbles to every one of the 1,050,312 children in New York. Not knowing what else to do with the marbles, the children decided to stack them up into a 3-sided pyramid to see how high it could get. Note that every level of the pyramid is 2 inches high. If every child uses their marbles, how many inches tall can the pyramid get?
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460 inches = 38 feet 4 inches

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Marble pyramids

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