7 # 4 = 5
1 # 1 = 2
3 # 2 = 5
4 # 3 = ?
Possible answers: 1, 2, 3, 4 or 5
In this puzzle, I tried to take square of each number and subtracting them or adding them, for instance 49 + 16 = 65 (13 * 5), but each time my result or connection of numbers doesn't suit others. I hope you can solve it. Thanks. (source: probably Kuark publications, YOS questions.I have seen this questions on another source, tried to solve myself.)