Posted by hope any one can help on Monday, May 27, 2013 at 12:47am.
Find the number of pairs of nonnegative integers (n,m), such that 1≤n<m≤100, n∣m^2−1 and m∣n^2−1.
Details and assumptions
The notation a∣b means a divides b, or b=ka for some integer k.

Mathematics  Bako, Monday, May 27, 2013 at 5:40pm
208

Mathematics  math, Thursday, May 30, 2013 at 4:32am
how did you do that?
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