#1 1道是讲improvement and side effect, 问题是有improvement的人是否多于side effect的人 1是at least 10 people have side effect, and 60 percent of the people who get improvement have side effect. 2是 90 percent of the people who have side effect get improvement. 貌似是这样的,容我等会结合寂静再回来编辑下。当时看了大概有3分钟,感觉无从下手。一怒之下选了个e.. - should be C? I/M - improvement; side effect- S/E 60%*I/M = 90%*S/E I/M : S/E = 3:2 #2 同意狗主 #3 又想起一道数学,三个prices median 是否大于mean 1 the mean of the highest and the lowest is greater than the mean of the three 2 the highest is the 250 more than the mean and the lowest is 150 less than mean. should be C? a<b<c from 2: a+c = 50 from1: b<50 b<50 so b<(a+b+c)/3 -- by 会员 gmatw2012 (2012/12/26 3:58:29)
I'm not sure, maybe there's a problem in the question, I'll get hold of u later. |