标题: 谁能回一下这道狗的算法？ [打印本页] 作者: yangjuanb 时间: 2010-8-13 02:05 标题: 谁能回一下这道狗的算法？ 14．The concil has 9 male members and 7 female members, if a meeting must select at least one male member and one female member, how many permutations are possible? A. 81 B.221 C.441 D. 不记得了 E882 选C作者: 立小夏 时间: 2010-8-13 02:15
没说一共选几个没法算啊。。作者: yangjuanb 时间: 2010-8-13 02:28
441 是怎么出来的？