My name is John Lau and I am a student at Piedmont Middle. I am in 8th Find all positive integers n so that n^{2}  2 is a multiple of n  4. Hi John,Here is a hint: if and only if n^{3} 2 n^{2}(n4) is a multiple of n4. So the question is to find out for what n 4n^{2}2 is a multiple of n4. Proceed in a similar way. Sukanta
