When 240n is the square of an integer, what is the least possible value of n?
A. 10
B. 15
C. 20
D. 25
E. 30
==> From 240n=4^2(3)(5)n=integer^2, the least possible value of n becomes (3)(5)=15.
The answer is B.
Answer: B
A. 10
B. 15
C. 20
D. 25
E. 30
==> From 240n=4^2(3)(5)n=integer^2, the least possible value of n becomes (3)(5)=15.
The answer is B.
Answer: B
