1) If n and y are positive integars and 450y= n^3, which of the following must be an integar?
a) Y/3x2^2X5 ( That is the answer)
b) Y/3^2X2X5
C) Y/3x2x5^2


2) The perimeter of square region S and rectangular region R are equal. If the sides of R are in the ratio 2:3, what is the area of region R to the area of region S?
A) 25:16
B) 24:25
C) 5:6
D) 4:5
E) 4:9

3) The number of stamps that Kaye and Alberto had were in the ratio of 5:3, respectively. After Kaye gave Alberto 10 of her stamps, the ratio of the number Kaye had to the number Alberto had was 7:5. As a result of this gift, Kaye had how many more stamps than Alberto?

a) 20
b) 30
C) 40
d) 60
e) 90

4) A certain company has 18 equally qualified applicants for 4 open positions. How many different groups of 4 applicants can be chosen by the company to fill the positions if the order of selection does not matter?
a) 18
b) 72
c) 180
d) 1,260
e) 3060

I was able to solve this one but looking for a quick way than what I spent on this question.

I am writing in four weeks. Advice will be helpful. All I need is 600.

Thanks

dude..all the questions are already answered in this forum..Please search it.you can find lot of explanations.

Also please post it in appropriate section

I will serach. Sorry about not being able to post in the "appropriate" section as I am new to this and still exploring. I hope that I have not caused a distress to anyone.

Not a problem buddy...

Check the Forums Tab above..you can find the appropriate sections in that.