A simple math problem sparked heated debate on Chinese education forums two years ago.

A seemingly simple math problem has left social media users confused as they argue over the correct answer. The equation, shared by user @BholanathDutta on X, appears simple enough for grade school ...

Every few months, the Internet eats itself over some kind of viral riddle or illusion, each more infuriating than the last. And so, like clockwork, this maddening math problem has gone viral, ...

Add Yahoo as a preferred source to see more of our stories on Google. We like to think that we're pretty good at math, especially after years of schooling. But every once in a while, a simple ...