PUMaC 2008 · 代数（A 组） · 第 4 题

PUMaC 2008 — Algebra (Division A) — Problem 4

(3 points) What’s the greatest integer n for which the system k < x < k + 1 for k = 1 , 2 , . . . , n has a solution? ∑ ∑ k n 1

解析

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