[求助]要考试了哦，问几个GMATprep里面的数学 - ChaseDream

1.According to the directions on a can of frozen orange juice concentrate,1 can of concentrate is to be mixed with 3 cans of water to make orange juice.Howmany 12-ounce cans of the concentrate are required to preprared 2006-ounce servings of orange juice?
答案：25

2.If n and m are positive integers,what is the remainder when 3^(4n+2)+m is divided by 10?
(1)
n=2;
(2)
m=1
答案：B

3.Lines n and p lie in the xy-plane.Is the slope of line n less than the slope of line p?
(1)
Lines n and p intersect at the point(5.1)
(2)
The y-intercept of line n is great tha the y-intercept of line p.
答案：C

4.All of the stocks on the over-the-counter market are designated by either a 4-letter or a 5-letter code that is created by using the 36 letters of the alphabet.Which of the following gives the masimum number of ddifferent stocks that can be desognated with these codes?
A:2(26^5)
B26(26^4)
C27(26^4)
D26(26^5)
E27(26^5)
答案：C

5.Are at least 10 percent of the people in Country X who are 65 yearsold or older employed?
(1)
In Country X,11.3 percent of the population is 65 years old or older;;
(2)
In Country X,of the population 65years old or older,20percent of the men and 10 perccent of the women are employed.
答案：B

要考试了今天第一次用模考软件，数学比做GWD的时候错的多了好多好多，大哭~
麻烦大家了！

5.这个。。。这世界上除了男人，不就是女人么。。。虽然人妖也有可能，不过应该不是社会的主要群体。。

of the population 65years old or older,20percent of the men and 10 perccent of the women are employed.

恩~感谢一下楼上先。我做的时候也觉得第一题给的数字怎么也算不出来选项里的答案啊，不过看在是ETS寄来的软件就没敢怀疑它的准确性。

不过还是有疑问呢，那个第2题，一开始是怎么知道位数一定是9的？难道也是要一个一个算上几个然后总结出来的？貌似3的n次方数字还都蛮大的呢~

第3题，偶怎么就画不出来呢，总觉得跟截距正负也有关系的啊，你自己画画看

第一题应该是这样的 preprared 200 个 6-ounce servings of orange juice?