Mathematics
Senior High
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2 3 4小題要怎麼算？
將5件不同的獎品,分給甲、乙、丙、丁四人,求下列分法各有幾種?(獎品必須全部分完)
(1)任意給(每人可得多於1件、可不得)。
(2)甲恰得一件。
(3)甲至少得一件。
(4)甲、乙均至少得一件。
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