作者berrylover (看不见看不见我不要看见ꌩ
看板GRE_Verbal
标题Re: [问题] 两题计量跟一个问题
时间Thu Sep 25 23:50:34 2008
※ 引述《kokopelli ( 你身边)》之铭言：
: 在BB的题目
: Of the 7 members of the city council, 4 are Democrats and 3 are Republicans.
: T is the total number of different 3-person committees that can be appointed
: from the council membership such that each committee consists of 2 Democrats
: and 1 Republican.
: A. T
: B. 15
: A: A
: 是比大小题
: 请问第2行开始到最後 是什麽意思?
T是从这七人中选出相异之三人使得这三人中有两人是共和党一人是民主党的方法
C(4, 2) * C(3, 1)=18
: 2. Each of the following numbers has two digits blotted out. Which of the
: numbers could be the number of hours in x days, where x is an integer?
: A. 25_ , _06
: B. 50_ , _26
: C. 56_ , _02
: D. 62_ , _50
: E. 65_ , _20
: A: E
: 谢谢!!
是24的倍数 则必为4的倍数 所以看末两位就好了 选 E
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1F：推 kokopelli:谢谢你!! 59.104.34.200 09/27 22:34