The bat-and-ball problem is a famous math puzzle that more than half of people—even Harvard graduates—get wrong. It's ...

Most of us have not tested our arithmetic skills since we were forced to in grade school, but some are reaching back into their memories to solve a math equation that has left social media users ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. A man has sparked a viral debate after sharing how his test paper was ...

The result is correct but challenges core norms of mathematics: checking proofs, crediting ideas and keeping research open to ...