07年1月math原始机经讨论稿第13篇完(671-753)1.28 23:28

sigrid920

以下是引用rio在2007-1-28 21:26:00的发言：

20多岁是一个男人一生最黯淡的时光要什么没什么
所以男人一定要珍惜这个时期爱你的女孩
因为她是在用一生最美好的时光陪你走过你最黯淡的时光

——与各位男士共勉

 

不好意思~~插句题外话~~特别同意RIO GG的观点~~还有那个坚决抵制二奶的名言~~哈,哈, RIO特别站在女生这边呢~~真是好人~~

rio

以下是引用sigrid920在2007-1-30 5:43:00的发言：

 

不好意思~~插句题外话~~特别同意RIO GG的观点~~还有那个坚决抵制二奶的名言~~哈,哈, RIO特别站在女生这边呢~~真是好人~~

你知道我不是女的？

seabrook

675.DS 题：|X|=Y-1 是否成立
1). X=1-Y     2). y<0 
我选的是C

答案：B

? 谢谢

rio

if y<0,y-1<0

x绝对值不可能等于y-1

seabrook

 688  是不是类似GWD里的这道题目? 

	Favorable	Unfavorable	Not Sure
Candidate M	40	20	40
Candidate N	30	35	35

 

The table above shows the results of a survey of 100 voters each responded “favorable” or “unfavorable” or “not sure” when asked about their impressions of candidate M and of candidate N.  What was the number of voters who responded “favorable” for both candidates?

(1)   The number of voters who did not respond “favorable” for either candidate was 40.

(2)
              The number of voters who responded “unfavorable” for both candidates was 10.

                  

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficient.

Answer:    A

rio

对

很多都是这一类的

seabrook

"If y<0,y-1<0

x绝对值不可能等于y-1"

 脑子进水了 忘记否定也是一种答案 谢谢RIO 

PS 688选B选项等同上题, 那不是不应该选吗?

[此贴子已经被作者于2007-1-30 6:44:18编辑过]

rio

688的A又不知道是什么...

seabrook

选项B:同时反对A和B的人数是65  等同与

The number of voters who responded “unfavorable” for both candidates was 10.

那不是不应该选吗? 可是688给出的答案是B ???

lifechaser

哪位NN能不能把681.概率题：小姑娘W吃糖果。罐子里面有6颗绿糖，3颗红糖，2颗白糖。每次吃一颗。问，连续两次吃到白糖的概率？
            

2/11*1/10 仔细解释一下啊?多谢了!