单选题:红、黑、白三种颜色的球各10个。把它们全部放人甲、乙两个袋子中,要求每个袋子里羔种颜色的球都有,且甲、乙两个袋子中三种颜 题目分类:行政能力 题目类型:单选题 查看权限:VIP 题目内容: 红、黑、白三种颜色的球各10个。把它们全部放人甲、乙两个袋子中,要求每个袋子里羔种颜色的球都有,且甲、乙两个袋子中三种颜色的球数之积相等,那么共有( )种放法? A.25 B.27 C.29 D.30 参考答案: 答案解析:
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