"This isn’t just math — it’s a brain workout!"

1 + 5 = 18

2 + 10 = 36

3 + 15 = 54

4 + 20 = ?

If you're a genius, drop the answer in the comments!

(Hint: It’s not simple addition... there’s a twist!)

Let’s see who can crack this puzzle!

#BrainTeaser #MathChallenge #PuzzleTime #IQChallenge #ThinkSmart