救助，鼠穴，302题和309题

奔跑的悟空 · 发表于 2010-6-10 09:34:05

309.24 brands of some products, each has four properties, say A, B, C, D. Each property is rated as one of the following three categories: excellent, good, un(pleasant)?. How many brands have at least two good ratings out of the four properties?
1) exactly 10 brands have at least 2 excellent ratings.
2) exactly 12 brands have at least 3 good ratings.
I picked E, but I could be wrong. There is no way I could knock out this one in two minutes.

302.remove egg from nest一共remove了N个（已知），都是是从拥有90%的大于5个egg的nest里remove，一个nest里remove2个,然后告诉了你有小于等于4个egg的nest的个数，问你总共有多少个nest（看懂题目就可,这是我的第一题，差点没看懂）

记得这两道题目在之前的机经里就有，不过是待补充的，读了之后还是不能明白什么意思.......求助各位大侠........谢谢啦！！！

救助，鼠穴，302题和309题

所属分类: GMAT考试

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