Board logo

标题: gwd-5-6,12 [打印本页]

作者: apple1    时间: 2005-2-27 15:35     标题: gwd-5-6,12

gwd-5-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

这题我不明白是什么意思,请求赐教!

GWD-5-Q12:

If r, s, and w are positive numbers such that w = 60r + 80s and r + s = 1, is w < 70?

(1) r > 0.5

(2) r > s

答案:D;我选:E

请教这题的思路!


作者: himba    时间: 2005-2-27 15:42

第一题:每个人可能分到office 1或office 2,所以每个人有两种分配可能,三人共2*2*2=8种可能

第二题:因为r+s=1,所以条件一和条件二等价.w=60r+80-80r=80-20r,若r>0.5,推出w<70


作者: girls    时间: 2005-3-2 13:06

ding!!!!!!
作者: apple1    时间: 2005-3-2 13:08

thanks    a    lot  !!!




欢迎光临 国际顶尖MBA申请交流平台--TOPWAY MBA (http://forum.topway.org/) Powered by Discuz! 7.2