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美国数学竞赛题1.Find the area of the region that lies under the graph of f (x) =|||| 6 − x | −x | −x | −x | andabove the x axis,between x = 0 and x = 12.2.Alex is playing a card game and tabulating the results.He calcul 一道美国数学竞赛题Circles A,B and C with radii 2,4,and 6 respectively are tangent to one another.The common external tangent to circles A and B intersects the common external tangent to circles A and C at point x.Find the measure of angle x. 数学竞赛题, 美国数学竞赛题（都英语进）1.Make two random marks on a long stick.(a) If you then break the stick into k pieces of equal length,what's the chance the two marks are on the same piece?(b) If you then break the stick into k pieces of random 美国数学竞赛题（都英语进）1.At a high school in Germany,80% of all students in the school are male,but only 5% ofthe male students and 10% of the female students are on the math team.If a member ofthe math team is selected at random,with 六年级华罗庚数学竞赛题 小学三年级数学竞赛题 比如：奥林匹克数学竞赛题 三道数学竞赛题. 初中数学竞赛题RT 数学初一年级竞赛题 2011初中数学竞赛题 数学竞赛题及答案 大学数学趣味竞赛题 数学竞赛题!在线等 初一数学奥林匹克竞赛题 Ar You The One 华罗庚杯小学数学竞赛题