Maths brain teasers are once again sweeping across the internet, capturing the curiosity and confusion of users who just can’t resist solving them. These puzzles, often deceptively simple in ...

I’ve been out of school for decades, and I don’t spend my days solving equations (I’m more of a word person). Still, I like to think I have a solid grip on basic math: I can usually gauge whether a ...

Twenty years ago, this puzzle appeared on a test administered to top-tier math students from 16 countries around the world. Only 10% of test takers got it right. In the U.S., only 4% managed to ...

While many scroll past riddles and puzzles without a second thought, there’s a growing number of online users who pause, squint, and dive headfirst into these brain-twisting challenges. For them, a ...