Question

Riddle Time!! Answer only if you know


Professor Devonshire was losing his marbles, Dr. Wallaby thought, staring at the equations filling the board in Dr. Devonshire’s office. What kind of addition was this?

1+1 = 6

2+1 = 6

1+6 = 6

2+6 = 6

6+6 = 6

1+3 = 8

7+9 = ??

I wonder what goes in the blank ?​

Answer 1

Answer:

9

Explanation:

one + one = 6 letters

two + one = 6 letters

one + six = 6 letters

two + six = 6 letters

six + six = 6 letters

one + three = 8 letters

and

seven + nine = 9 letters