美国的数学竞赛难不难看看这道题就知道了
今天的题目是排列组合问题,来自美国的一次数学竞赛,解题所用知识不超过小学5年级. 题目(5星难度):有一个九边形的各边长...
2008-1972USAMO美国数学奥赛历年真题打包下载
雷竞技raybet安卓版下载 整理了1972-2008 USAMO全部真题 供学生免费下载使用
2009 USAMO Problems真题及答案
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2011 USAJMO Problems真题及答案
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