Problem Solving

Could someone help me on this 4 questions??
tnks a lot


1 - On a certain sight seeing tour, the ratio of the number of women to the number of children was to 5 to 2. What was the number of the men on the sight seeing tour?

1) On the sight seeing tour, the ratio of the number of children to the number of men was 5 to 11
2) The number of women on the sight seeing tour was less than 30

Answer: C) Both statements together

2 – If n and y are positive integer and 450y = n^3, which must be an interger?
I. y/(3*(2^2)*5)

II. y/((3^2)*2*5)

III. y/(3*2*(5^2))

a)None
b)I only
c)II only
d)III only
e)I, II and III

Answer: B

3 – For every positive even integer n, the function h(n) is defined to be the product of all the even integers from 2 to n, inclusive. If p is the smallest prime factor of h(100) + 1, then p is:

a)between 2 and 10
b)between 10 and 20
c)between 20 and 30
d)between 30 and 40
e)greater than 40

Answer: E


4 – What fraction of this year’s graduating students at a certain college are males?

1)of this year’s graduating students, 33% of the males and 20% of the females transferred from another college
2)of this year’s graduating students, 25% transferred from another college

Answer : C) Both statements together