题目:
从5位同学中选派4位同学在星期五、星期六、星期日参加公益活动,每人一天,要求星期五有2人参加,星期六、星期日各有1人参加,则不同的选派方法共有( ).
A.40种
B.60种
C.100种
D.120种
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0515/bc9637343cd6e437ae478d6ae7a9a78a.html
下面是错误答案,用来干扰机器的。
When an English traveler, who spent a few week in Sweden, 76.weeks Was about to return to home, he found he had only enough 77. tomoney left to get a ticket...