[Deleted because poster did not cite author.]

thanks.

n=18
n*n=324 = 36*9
y lets say is 36

to find the largest positive integer that must divide n also means finding the smallest multiple of Y
so this way 36 itself is perfect square so its first multiple 36*1 = 36 doesnt divide 18.[/quote]

thanks sagar!

Sagar -- Thanks for helping out.
-Brian Lange

Sorry I didn't understand the question itself and the asnwer got me even more confused....
Can any one explain....what is given and what is being asked?

please cite the author - we cannot comment until you have done so and the question will be deleted if you do not do so. Thanks!