A brainy riddle that's stumped mathematicians since World War II appears to have been cracked via artificial intelligence. OpenAI says one of its AI models has solved the "unit distance problem," a ...

Here at PopMech, we love mind-bending math and logic puzzles, which is why we regularly recruit the sharpest minds in the world to concoct riddles that will test your critical thinking, mathematics, ...

A man steals $100 from a shop—but how much does the shop owner actually lose? This viral riddle has stumped the internet with its tricky math. A man steals $100 from a shop. What happens next is the ...

Ready for the solution? Click here to see if you’re right —and to get an insanely in-depth breakdown of how to solve this problem, plus the complete answers to 100+ other challenging riddles. How Many ...