GWD-26-30讨论

tjr · 发表于 2010-1-12 23:14:06

Q30:
What is the median number of employees assigned per project for the projects at Company Z?
(1) 25 percent of the projects at Company Z have 4 or more employees assigned to each project.
(2) 35 percent of the projects at Company Z have 2 or fewer employees assigned to each project.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.
Answer: C
遇到两次了，觉得应该是：E
麻烦给讲一下。

zhangfang923 · 发表于 2010-1-12 23:18:33

25%的人等于或者多于4，35%的小于或者等于2，中间40%不就是3嘛。问你中数是多少，3.。。

tjr · 发表于 2010-1-12 23:23:14

没说数字必须是连续啊！谢谢。

Iljiajia · 发表于 2010-1-12 23:31:02

没说数字必须是连续啊！谢谢。

-- by 会员 tjr (2010/1/12 23:23:14)

呵呵，人的单位一定是整数嘛，除了4人及以上的和2人及以下的，就剩都是3人的了，就像一个有100个数的数列一样，前25个都是2或小于2的数，26到65都是3，66到100都是4或大于4的数。问你数列最中间的数字是多少，那就是第50位和第51位的平均数，本题中还是3.

GWD-26-30讨论

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