Question

If

5 - 3 = 13
8 - 1 = 68
6 - 3 = 24
9 - 5 = 35

Then

7 - 1 = ??

Answer 1

5 -3 = 2-1=1 is the first digit and 5-3+1=3 is he second digit so 13
8 -1 = 7-1=6 is the first digit and 8-1+1=8 is he second digit so 68
6 -3 = 3-1=2 is the first digit and 6-3+1=4 is he second digit so 24
9 -5 = 4-1=3 is the first digit and 9-5+1=5 is he second digit so 35
Similarly 7-1=6-1=5 is the first digit and 7-1+1=7 is the second digit so 57 is the answer
Answer 57

Answer 2

57
Example: 7-3= 2 3 4 5 6...