If you’re like many people, you’re probably glad the days of solving tricky math problems are long behind you. While some enjoy numbers and logic, others prefer creativity over calculations. Still, online puzzles have a way of drawing people in, turning simple challenges into hours of curiosity and debate.

Across the internet, many enjoy testing their minds with riddles and number patterns, and one particular math puzzle has left thousands scratching their heads. The challenge looks simple at first glance but quickly becomes confusing depending on how you approach it:

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

At first, it seems like basic arithmetic, but the pattern isn’t straightforward. The puzzle has sparked debate online, with different people arriving at different answers based on the method they use. Some interpret it as a pattern that builds on previous results, while others see it as a formula involving multiplication or number bases.

One popular approach suggests the rule A + A(B), which leads to the answer 45. Another method adds the previous result to the next equation, producing 34. Other interpretations yield answers like 32, 111, or even 1101, depending on the mathematical system used.

What makes this puzzle interesting is that it doesn’t have just one universally accepted solution. Instead, it challenges how you think about patterns and logic. Some see it as a fun brain teaser, others as a frustrating riddle—but either way, it proves how a simple-looking math problem can spark endless discussion.

So, what answer did you get?