Question

If 3241= 64,5124=58, 1833=89 what is 3116=--? solution

Answer 1

Multiply first two digits of left side number to get first digit of right side number and multiply Last two digits of left side number to get last digit of right number.
Example
$3 \times 2 = 6 \: \: \: \: \\ 4 \times 1 = 4 \\ so \: \: 3241 = 64 \\ \\ 5 \times 1 = 5 \\ 2 \times 4 = 8 \\ so \: \: 5124 = 58 \\ \\ 1 \times 8 = 8 \\ 3 \times 3 = 9 \\ so \: \: 1833 = 89 \\ \\ thus \: \: 3116 = (3 \times 1)(1 \times 6) = 36$