GWD 11-3

dream_piggy

Q3:

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

请教你们的思路?

我的思路 (0,3) 和(3,0) 2种 加 C(3,1)+C(3,2) =8种

dream_piggy

thanks   !!!!                      

baobaobears

另一种方法: 也可以用穷举法, 设人员分别为A,B,C.

则OFFICE1:　　０，　ABC, 　A, 　B, 　C, 　AB, 　AC,　 BC

则OFFICE2：ＡＢＣ,　 0,  　BC,　AC,　AB, 　C,  　B,   　A.

共八种．　答案为Ｄ

xincanyouji

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?

某个公司打算把员工分到不同的办公室，分配方法是这样的：有些办公室可以不分配员工，有些办公室可以分配多于1个的员工。现在问把三个员工分到2个不同的办公室，按照上面的说的分配方法，有多少种分配方法？？

bloomingdales

sorry问一句这题是什么意思呀，怎么不懂以什么方法分呀？

能帮着翻译一下吗？

THANKS

pretenderhus

根据条件可以得到 每个employee可以有两种选择 所以三个emplyee就是2^3=8