hope any one can help

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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.
12 years ago

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The following answers were posted by visitors named hope any one can help.