标题: GWD 5-6 [打印本页]
作者: dlmd 时间: 2005-2-5 14:00 标题: GWD 5-6
Q6:
A certain company assigns employees to offices in such a way that some of the offices can be empty and more than one employee can be assigned to an office. In how many ways can the company assign 3 employees to 2 different offices?
A. 5
B. 6
C. 7
D. 8
E. 9
I only got 7, how do you got 8?
作者: sammen 时间: 2005-2-5 21:57
先三个人中找一个出来,让他去2个房间中的一个,因为一旦一个人定了且房间定了,那么另外的人和房间也都定了,再加上3个人在一起的情况,2种,所以一个8种.
作者: dlmd 时间: 2005-2-6 01:51
can I use 2*2*2=8? since each person can have 2 choice, stay in room A or stay in room B,
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