11 Math Riddles You Won't Solve On The First Try
With math riddles, you're often on the brink of total despair – but can you solve these riddles on the first try? It's not that easy!

2 - 1 = 1
4 - 2 = 2
7 - 4 = 3
11 - 7 = 4
16 - 11 = 5
So the correct answer is 16!
Let's move on to the last math problem: