PUMaC 2008 · 代数(B 组) · 第 6 题
PUMaC 2008 — Algebra (Division B) — Problem 6
题目详情
- (4 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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