关于GWD数学2-26和2-27的问题

faytastic · 发表于 2010-11-9 16:36:56

Q26:
There are 8 books on a shelf, of which 2 are paperbacks and 6 are hardbacks. How many possible selections of 4 books from this self include at least one paperback?

A.   40
B.   45
C.   50
D.   55
E.   60

Answer:
------------------------------------------------------------------------------------------------------------
Q27:
In a corporation, 50 percent of the male employees and 40 percent of the female employees are at least 35 years old. If 42 percent of all the employees are at least 35 years old, what fraction of the employees in the corporation are females?

A.   3/5
B.   2/3
C.   3/4
D.   4/5
E.   5/6
每次遇到上类题巨郁闷，完全没办法下手……

关于GWD数学2-26和2-27的问题

所属分类: GMAT考试

正在浏览此版块的会员 ()

浏览过的版块