PUMaC 2008 · 代数(A 组) · 第 3 题
PUMaC 2008 — Algebra (Division A) — Problem 3
题目详情
- (3 points) Let f ( n ) = 9 n − 5 n − 4 n . Find the greatest common divisor of f (17), f (18), . . . , f (2009). k
解析
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Original Explanation
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