This quick mental trick uses three simple math questions to set up a specific number prediction, asking viewers to think of a number between 5 and 12 before locking in their answer. It's a fast, ...

Here are 10 math problems that confused people across the internet. Can you solve them?

Doug Mataconis really threw the Twitter world for a loop when he challenged the internet to solve a math problem from 10 years ago. And it's safe to say anyone with an account had intense feelings ...

Add Yahoo as a preferred source to see more of our stories on Google. A teacher's clever trick question on a math test about symphony music drove the internet to the brink — but she cleared it all up.