Get out your timer and number two pencil to see if your arithmetic skills from grade school are still intact.

A seemingly straightforward math problem has sparked debate online after leaving social media users confused over the correct answer. The brain teaser, which appears simple at first glance, has ...

We preselected all newsletters you had before unsubscribing.

Add Yahoo as a preferred source to see more of our stories on Google. Sorry, it’s math time. But these are some of the easiest math quizzes we’ve ever put on ...