PUMaC 2024 · 组合（A 组） · 第 2 题

PUMaC 2024 — Combinatorics (Division A) — Problem 2

Arnie draws 20 real numbers independently and uniformly at random from the interval [0 , 1]. 19 Given that the largest number that Arnie draws equals , the expected value of the average 20 m of the 20 numbers can be written as for relatively prime positive integers m and n . Find n m + n .

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