机经原题:A+B+C=30,A小于等于B小于等于C,C-A=3,问下面哪个答案对:I:9,II:10,III:11,选项是A:I ONLY B:II ONLY C:III ONLY D:I、III ONLY E:I、II、III
我遇到问题是这个: 问median是什么,所以 是 D
还有一个新题(因为我没看完机经,所以不知道是不是新的)
已知: [(n+8)!-(n+7)!]/(n+7)=15! 问 n是多少 答案是8
然后是逻辑题,
逻辑: 选总统,大家要vote2个issue,v这个人的issue得了more than half 的票,问which of the following must be true. 答案大概有: A. at least some of the voters choose one issue of v choose the other issue of v B...at least some of the voters choose one issue of v don't choose the other issue of v 后面记不住了 这题很饶,我时间也不多,所以没怎么想就随便选了