练习册

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    解:(Ⅰ)设甲获第一.丙获第二.乙获第三为事件. 则············································································ 6分 (Ⅱ)可能的取值为 . . .··········································································· 12分 0 1 2 ······························································· 14分 【查看更多】

     

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