解锁国际数理化生竞赛进阶之路之AMC
莫过于美国的AMC了.AMCAMC的定义:AMC是American Mathematics Competition美国数学竞赛的缩写,由美国数学协会(...
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
翰林国际教育整理了1972-2008 USAMO全部真题 供学生免费下载使用
2009 USAMO Problems真题及答案
2009 USAMO Problems真题及答案 完整版真题免费下载 +答案解析请参考文末 真题下载请前往【纯真题】小程序 Day 1 Problem 1 Given circles and intersecting at points and , let be a line through the cent...
2010 USAMO Problems真题及答案
2010 USAMO Problems真题及答案 完整版真题免费下载 +答案解析请参考文末 Day 1 Problem 1 Let be a convex pentagon inscribed in a semicircle of diameter . Denote by , , , the feet of the perpendicular...
2011 USAMO Problems真题及答案
2011 USAMO Problems真题及答案 完整版真题免费下载 +答案解析请参考文末 Day 1 Problem 1 Let , , be positive real numbers such that . Prove that Problem 2 An integer is assigned to each vertex ...
2010 USAJMO Problems真题及答案
2010 USAJMO Problems真题及答案 完整版真题免费下载 +答案解析请参考文末 Day 1 Problem 1 A permutation of the set of positive integers is a sequence such that each element of appears precisely one ...
2011 USAJMO Problems真题及答案
2011 USAJMO Problems真题及答案 完整版真题免费下载 +答案解析请参考文末 Day 1 Problem 1 Find, with proof, all positive integers for which is a perfect square. Problem 2 Let , , be positive real nu...
2012 USAMO Problems真题及答案
2012 USAMO Problems真题及答案 完整版真题免费下载 +答案解析请参考文末 Day 1 Problem 1 Find all integers such that among any positive real numbers , , , withthere exist three that are the side len...
