If 3+8=11 and 5+12=71 find 17+7

Answer 1

Reverse result
5 + 12 = 17 // 71
17 + 7 = 24 // 42.

Answer 2

Answer can also be 24
Reverse the digits of answer only if the numbers in the question are numbers of pythogoran triplets.
This logic is also correct. Isnt it?

Answer 3

42

Answer 4

The Meaning of Life is 42!