Posted by **hope any one can help** on Monday, May 27, 2013 at 12:47am.

Find the number of pairs of non-negative 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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