The International Math Olympiad (IMO) is a brainy battleground where the world’s most talented teenage mathematicians wrestle with devilishly difficult math problems. It’s long been considered a ...

This holiday-themed brainteaser looks simple, but it's quietly tripping up adults everywhere. A math teacher walks us through ...

We like to think that we're pretty good at math, especially after years of schooling. But every once in a while, a simple third-grade math problem manages to trip us up and make us question our ...