[中學] 排列組合問題
書上寫每人可兼得，又說每人至少一個
這兩個條件是否有矛盾？
Q2
將六件不同物分給甲乙丙丁四人，每人可兼得，則甲至少一件的分法有___種？
想請問C(6,1)*4^5 （先分一件給甲，剩下的五件再隨意分給甲乙丙丁）
這樣的想法是哪裡出錯了？
正解是4^6-3^6
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08/16 17:11, , 1F
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