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
• 中國高一的數學,排列組合。 嘿嘿,雙料博士, -FHZM- ♂ (9493 bytes) () 03/05/2014 postreply 19:32:40
• 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- ♀ (0 bytes) () 03/05/2014 postreply 19:45:02
• 別逗了。就你那兩刷子,還敢說我錯! -Fhzm- ♂ (161 bytes) () 03/06/2014 postreply 06:15:15
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