In each of the following questions, all the equations except one have been solved according to a certain rule. You are required to solve the unsolved equation following the same rule and to choose the correct answer out of the given options.
4 - 4 = 17, 6 - 6 = 37, 2 - 2 = 5, 5 - 5 = ?
1) 27
2) 26
3) 20
4) 24

Explanation

1, young tips stay on how forever can 03 17 42 50 62 67 89