Question

1+5=5 2+5=12 3+6=21 8+11=. ?

Answer 1

8+11=19. For an example: If I already have 8 pigs at the animal farm, and one of my friends brings 11 more pigs, I will have a total of 19 pigs because 9 pigs plus 11 more pigs equals 19 pigs altogether at the animal farm.

Answer 2

The answer would be 30 because 5+5+2=12 and 12+3+6=21 and 21+8+11=30