In 2019, math seemed to have many mainstream moments—and that's not including the viral problems that made us want to rip our hair out. This year saw a steady stream of answers (or at least partial ...

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, ...

In 2019, math seemed to have many mainstream moments—and that’s not including the viral problems that made us want to rip our hair out. This year saw a steady stream of answers (or at least partial ...