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Re:唉，数学不好，不知道C(10000000000,999999999)=C(10000000000,1)=10000000000是如何成立的，我是得到C(10000000000,999999999)=C(10000000000,9000000001）

Posted by honghu at 2006-04-23 22:58:29 on Problem 2249
In Reply To:C(10000000000,999999999)=C(10000000000,1)=10000000000 Posted by:Sempr at 2006-04-23 20:51:37
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