The Viral 1 + 4 = 5 Puzzle. The Correct Answer Explained

This riddle was posted to Facebook with the claim that only one in a thousand will figure it out.


1 + 4 = 5

2 + 5 = 12

3 + 6 = 21

8 + 11 = ?


What do you think the answer is?

The problem went viral and generated over 3 million comments with people arguing about the correct answer. What do you think the correct answer is?

I explain what many believe to be the correct answer in the following video.

The Viral 1 + 4 = 5 Puzzle. The Correct Answer Explained