There’s nothing quite like a maddening math problem, mind-bending optical illusion, or twisty logic puzzle to halt all productivity in the Popular Mechanics office. We’re curious people by nature, but ...

Counting will get you nowhere. Try a little combinatorics instead. By Kenneth Chang A couple of weeks ago, I wrote about a viral math problem — 8÷2(2+2) = ? — that drew the disdain of many ...

A perplexing brainteaser claiming to be solvable only by the 'smartest people' has been stirring curiosity online. The puzzle, which has become a hot topic on social media, challenges those attempting ...