PUMaC 2024 · 团队赛 · 第 12 题
PUMaC 2024 — Team Round — Problem 12
题目详情
- Find the number of positive integers 10 ≤ n ≤ 99 with last digit at most 5 such that the last n two digits of n are the same as n .
解析
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Original Explanation
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