Question
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.
Details and assumptions
The notation a∣b means a divides b, or b=ka for some integer k.
Answers
Bako
208
math
how did you do that?