C(5,1)+ C(5,2)*5 + C(5,3)*5 + C(5,4)*4 + C(5,5) = 126
五个里挑一个收五个球,五个里挑俩个收五个球,五个里挑三个分五个球,五个挑四个分五个球,五个里挑五个分五个球。
C(5,1)+ C(5,2)*5 + C(5,3)*5 + C(5,4)*4 + C(5,5) = 126
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中国高一的数学,排列组合。 嘿嘿,双料博士,
-FHZM-
♂
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03/05/2014 postreply
19:32:40
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呵呵, 就是。 进一步说明他几个的言论为啥离谱的出奇。
-去看北极光-
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03/05/2014 postreply
19:45:02
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别逗了。就你那两刷子,还敢说我错!
-Fhzm-
♂
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03/06/2014 postreply
06:15:15
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