OG上的数学题求解答！Data sufficiency

迈出舞步嫁你 · 发表于 2014-3-4 00:24:07

1. In a survey of retailers, what percent had purchased
computers for business purposes?
(1) 85 percent of the retailers surveyed who owned
their own store had purchased computers for
business purposes.
(2) 40 percent of the retailers surveyed owned their
own store.

2. Of the 66 people in a certain auditorium,at most 6 people have their birthdays in any one given month.Does at least one person in the auditorium have a birthday in January?
(1)Most of the people in the auditorium have their own birthday in February than March.
(2)Five of the people in the auditorium hae their birthday in March.

第一题答案是E，第二题答案是D。
OG上有解析，但是我没看懂，请大家帮我解释一下，谢谢了！

OG上的数学题求解答！Data sufficiency

所属分类: GMAT考试

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