[求助]GWD31难题错题汇总

dubaixpp

或许这个标题实在火星，但是我花了将近1个小时在CD上找牛人对于GWD31套题目的解析，不知为什么总是对不上我正在做的，天地良心啊，我也是在CD上下载的，怎么数学，RC，CR没一个对的上的？真的好奇怪。无奈只好自己发帖，希望各位牛人共同来讨论和指点我一些题目。

我下个月考试，现在开始每天一套GWD真题，做完对好答案后，我就把我不理解的题目，一一发上来，真的希望达人来帮忙啊，也希望对于和我一样的人有点帮助。

谢谢！考完以后，我也致力于来写JJ的！

[此贴子已经被作者于2009-7-15 8:43:13编辑过]

dubaixpp

2009/7/15:

数学：

Q2：A certain roller coaster has 3 cars, and a passenger is equally likely to ride in any 1 of the 3 cars each time that passenger rides the roller cosater.  If a certain passenger is to ride the roller coaster 3 times, what is the probability that the passenger will ride in each of the 3 cars.

A 0   B 1/9    C  2/9    D1/3    E 1                Answer: C

分析：我自己选了B， 因为分子ride3次roller coaster 应该是3，分母每乘一次都有三种可能，乘了3次，就是3*3*3,所以我觉得是1/9，但不知为什么是2/9 

dubaixpp

Q17:InTownX 64 percent of the population are employed, and 48% of the pupulation are employed males.  What percent of the employed people in Town X are females.

A 16%    B 25%    C 32%    D 40%      E 52%   Answer:  B

分析：根据我理解的题目意思，答案应该是64%*(1-48)%,算出来的是32%。不知答案为啥是B 

zhongyukai

分母是3×3×3，你分析得没错。而正好坐的是三辆不同的车的可能共有6种！即：第一次坐车三辆随便选，第二次只能选剩下的两辆（选过的那辆不能选），最后一次则就只能剩下那辆了。总共是3×2×1=6.所以概率就是6/27=2/9

dubaixpp

Q25: A photographer will arrange 6 people of 6 different heights for photograph by placing them in two rows of three so that each person in the first row is standing in front of someone in the second row.  The heights of the people within each row must increase from left to right, and each person in the second row must be taller than the person standing in front of him or her.  How many such arrangements of the 6 people are possible.

A 5     B 6        C 9      D24    E 36             Answer: A

分析：这道题我是画图的，最矮和最高的那个人的位置肯定是固定的，等于其他4个人排，根据题目我拍出来是6，不知为何答案是5，是我重复了一个？

dubaixpp

Q28： For any positive integer n, the sum of the first n positive integers equals [n(n+1)]/2.  What is the sum of all the even integers between 99 and 301?

A 10100    B 20200    C 22650     D 40200     E 45150   Answer: B

分析，老实说，这道题我看到有点一筹莫展，觉得前半句是废话且不可理解。后半句等于是一个等差数列中的偶数求和，就是等差数列求和？牛人们啊，请指点明路啊。。。没想到做第一套题目，数学就错了那么多。。。郁闷啊。。。

dubaixpp

Q30： Joanna bought only $0.15 stamps and $0.29 stamps.  How many $0.15 stamps did she buy?

(1) She bought $4.4 worth of stamps

(2) She bought an equal number of $0.15 stamps and $0.29 stamps

Answer:  D

分析：我觉得这道题是不是答案错了啊，第二个条件怎么能算出0.15邮票的个数呢？我本来选的是C

dubaixpp

Q32：For a convention, a hotel charges a daily room rate of $120 for 1 person and x dollars for each additional person.  What is the charge for each additional person?

(1) The daily cost per person for 4 people sharing the cost of a room equally is $45

(2) The daily cost per person for 2 people sharing the cost of a room equally is $25 more than the corresponding cost for 4 person.

Answer: D

分析：一开始觉得，一个人都要120，下面的条件中4个人怎么可能只要45？是不是题目出错了？最后我选的是C

dubaixpp

Q35:

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.

Answer：C

分析：求每个项目的中间数，但是条件里说25% 有多于4个人。。。。总之我应该是没理解题目意思，达人，出现吧。

累死了，明天继续verbal部分，哎。。。

dubaixpp

怎么都没人回我？