If n and y are positive integers, and 450y=n^3, which of the following must be an integer?
1) y/3*2^2*5
2) y/3^2*2*5
3) y/3*2*5^2
a)none
b) I only
c) II only
d) III only
e) I, II, III
Thanks in advance
1) y/3*2^2*5
2) y/3^2*2*5
3) y/3*2*5^2
a)none
b) I only
c) II only
d) III only
e) I, II, III
Thanks in advance
