11.博物馆A对于团体收费X元,若超过20人,则团体每人加收W元,博物馆B收Y元,若团体超过30人则每人加收Z元,现有一40人的团体,问B的收入大于A吗?
1) X2) W
I choose E as my answer, am I right?
13.technicians equally receive defective products from a box containing 88 defective products, if the number of the rest of defective products in the box less than 2 the number of technicians, then the following cannot be the number of technicians? 5 12 16 9 18 My ans: 12
5. there is a right circle cylinder, its volume is? (my first T, I can not remember what is the meaning of right circle cylinder, but I think is 直角, 是不是正的圆柱体?第一个就考我的数学词汇，TMD)
Whether the "right circle cylinder" means 圆柱体？
Who can translate this problem for me? I cannot understand the meaning, and I don't know whether the author's answer "12" is correct.
