求解GWD数学！！！

cherry211 · 发表于 2011-11-17 21:52:38

In the rectangular coordinate system, points (4, 0) and (– 4, 0) both lie on circle C.What is the maximum possible value of the radius of C ?

A.2

B.4

C.8

D.16

E.There is no finite maximum value.

为什么答案是E啊，我还想当然地以为是B ~~ 请NN指点迷津！！！

yangwq2006 · 发表于 2011-11-17 23:27:34

只说两个点在圆上，没有说在一条直径上，自己画几种情况就知道了

cherry211 · 发表于 2011-11-18 11:23:56

哦，

我果然是数学中的菜鸟，谢谢了~~~

cherry211 · 发表于 2011-11-18 11:27:20

求助啊，GWD29套，
An office supply store received a shipment of boxes of pencils. How many pencils were in the shipment altogether? (1 gross = 12 dozen)
(1) The number of boxes of pencils in the shipment was 6 gross.
(2) There were 3 dozen pencils in each box of pencils in the shipment.

所有格绕出来绕进去的，我就做错了！为什么选C 呢！求助NN ！！！

linghyan · 发表于 2011-11-18 12:09:20

问题求总数啊，就是the shipment 里有多少pencil
条件1，告知the shipment里有6g个box，条件2告知每个box有3d个pencil
问题中给出g=12d
答案就是两个条件乘积啊，选C

cherry211 · 发表于 2011-11-25 09:59:32

3Q,好简单额~~

cherry211 · 发表于 2011-11-25 10:01:01

GWD-28
请问NN，这个题目答案是不是错了~~
The operation Θ is defined by x Θ y = + for all nonzero numbers x and y. If z is a number greater than 1, which of the following must be true?

I. x Θ (-z) = 0
   II. z Θ = 1
  III. Θ = z

A.   I only
B.   I and II only
C.   I and III only
D.   II and III only
E.   I, II, and III

答案选E，我认为选D！

求解GWD数学！！！

所属分类: GMAT考试

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