2) C(18, 3) × C(15, 3) × C(12, 3) × C(9, 3) × C(6, 3) × C(3

來源: ppzcgg 於 2007-02-21 11:45:40 [] [博客] [舊帖] [給我悄悄話] 閱讀數 : (82 bytes)
回答: thanks 由 donz94086 於 2007-02-19 20:00:18

2) C(18, 3) × C(15, 3) × C(12, 3) × C(9, 3) × C(6, 3) × C(3, 3) = P(18) / 6^6

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