Futility Closet

An idler's miscellany of compendious amusements

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Quickie

What’s the final digit in the product of all the odd numbers from 1 to 99?

SelectClick for Answer

5.

August 28, 2025August 27, 2025 | Puzzles

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Futility Closet is a collection of entertaining curiosities in history, literature, language, art, philosophy, and mathematics, designed to help you waste time as enjoyably as possible.

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