This simple-looking equation has left many people debating the correct answer online. Can you solve it?

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Mathematicians have solved ...

Whenever I get coffee with a mathematician, I always ask which of the seven Millennium Problems they think will be next to ...

A graphic artist is testing everyone’s knowledge of the mathematical order of operations with a string of numbers and missing arithmetic symbols. Gergely Dudás, of Budapest, Hungary, shared the new ...

The currents of the oceans, the roiling surface of the sun, and the clouds of smoke billowing off a forest fire—all are governed by the same laws of physics and give rise to a complex phenomenon known ...