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A Change of Key

5 × 55 × 555 = 152625

remains true if each digit is increased by 1:

6 × 66 × 666 = 263736

October 16, 2012October 15, 2012 | Science & Math

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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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