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Can someone explain this answer

If n is a positive integer and n^2 [n square ] is divisible by 72, then the largest positive integer that must divide n is

A) 6
B) 12
C) 24
D) 36
E) 48

Answer B

nothing in the question stops you from choosing answer E , 48 . Can someone explain.

TIA.

by mad.grad

Sun Mar 15, 2009 5:53 pm
Forum: Problem Solving
Topic: Can someone explain this answer
Replies: 4
Views: 1307