返回列表 发帖

请教GWD的几道数学题,

  1. 各位xdjm,帮帮忙啊!这几题怎么都没算到答案。让我开始怀疑自己的数学能力了。郁闷阿……

In the figure, points A, B, C, D, and E lie on a line.  A is on both circles, B is the center of the smaller circle, C is the center of the larger circle, D is on the smaller circle, and E is on the larger circle.  What is the area of the region inside the larger circle and outside the smaller circle?

(1)   AB = 3 and BC =2

(2)   CD =1 and DE = 4

就是那两个圆的题,那个图我贴不上来。     为什么不选 D

2、At a certain company, each employee has a salary grade s that is at least 1 and at most 5.  Each employee receives an hourly wage p, in dollars, determined by the formula p = 9.50 + 0.25(s – 1).  An employee with a salary grade of 5 receives how many more dollars per hour than an employee with a salary grade of 1?

A.    $0.50          B.     $1.00          C.     $1.25               D.    $1.50                E.     $1.75

为什么不是选  B 。

       3、If n is an integer and 100 < n <200, what is the value of n?

(1)  n/36  is an odd integer.

(2)n/45   is an even integer.

答案是C。     为什么不选B . ( 在100 < n <200中,能整除45的只有135和180。)

[此贴子已经被作者于2006-7-23 13:09:18编辑过]

收藏 分享

返回列表

站长推荐 关闭


美国top10 MBA VIP申请服务

自2003年开始提供 MBA 申请服务以来,保持着90% 以上的成功率,其中Top10 MBA服务成功率更是高达95%


查看