C(5,1)+ C(5,2)*5 + C(5,3)*5 + C(5,4)*4 + C(5,5) = 126
五個裏挑一個收五個球,五個裏挑倆個收五個球,五個裏挑三個分五個球,五個挑四個分五個球,五個裏挑五個分五個球。
C(5,1)+ C(5,2)*5 + C(5,3)*5 + C(5,4)*4 + C(5,5) = 126
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中國高一的數學,排列組合。 嘿嘿,雙料博士,
-FHZM-
♂
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03/05/2014 postreply
19:32:40
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嗬嗬, 就是。 進一步說明他幾個的言論為啥離譜的出奇。
-去看北極光-
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03/05/2014 postreply
19:45:02
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別逗了。就你那兩刷子,還敢說我錯!
-Fhzm-
♂
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03/06/2014 postreply
06:15:15
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