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HMMT November 2023 U2

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Compute the number of dates in the year 2023 such that when put in MM/DD/YY form, the three numbers are in strictly increasing order. For example, 06/18/2306 / 18 / 23 is such a date since 6<18<236<18<23, while today, 11/11/2311 / 11 / 23, is not.

Dataset text NuminaMath olympiads. Quoted with source.

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Locator hmnt/2023/u2 · Tag BK1WQ2JKWQ · Edit this page on GitHub · Keys: j next, k previous