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PUMaC 2024 · 团队赛 · 第 2 题

PUMaC 2024 — Team Round — Problem 2

专题
Discrete Math / 离散数学
难度
L3
来源
PUMaC

题目详情

  1. Let real number sequences a and x be defined for 1 ≤ k ≤ 7 and suppose that a = 1 and k k 1 P 7 2 2 a = a + x for 1 ≤ k ≤ 7. Let x be chosen such that the quantity S = ( a + x ) is k +1 k k k k k k =1 m minimized. Then S = for coprime positive integers m and n . Find m + n . n 2
解析

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Original Explanation

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