Posted by Kristen on Wednesday, January 22, 2014 at 7:27pm.
What is the smallest counting number n so that 375n is a perfect square?

Math  Reiny, Wednesday, January 22, 2014 at 7:53pm
375n
= (25)(15)(n)
= (5x5)(15 x n)
to have a perfect square, each of my brackets must be a pair of same numbers.
I need a 15 in my second bracket
so n = 15