Question

1+4=5,2+5=12,3+6=21,then 5+8=?

Answer 1

add all

1 + 4 + 2 + 5 + 3 + 6 + 5 + 8 = 34 is the answer

Answer 2

"If you will observe this pattern then,

1 + 4 = 5

Whereas 2 + 5 = 12 because the answer of the last number is added to the sum of LHS.

Hence, 2 + 5 + 5 = 12

Similarly, 3 + 6 + 12 = 21

Similarly, 5 + 8 + 21 = 34

"