If n is a multiple of 5 and (n=p^2)(q), where p and q are prime numbers, which of the following must be a multiple of 25?
a. p^2
b. q^2
c. pq
d. (p^2)(q^2)
e. (p^3)(q)
what is the best approach to solving this kind of a problem?
d[/list]
a. p^2
b. q^2
c. pq
d. (p^2)(q^2)
e. (p^3)(q)
what is the best approach to solving this kind of a problem?
d[/list]
