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HMMT November 2020 U32

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The numbers 1,2,…,101,2, \ldots, 10 are written in a circle. There are four people, and each person randomly selects five consecutive integers (e.g. 1,2,3,4,51,2,3,4,5, or 8,9,10,1,28,9,10,1,2 ). If the probability that there exists some number that was not selected by any of the four people is pp, compute 10000p10000 p.

Dataset text NuminaMath olympiads. Quoted with source.

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