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 lot of trial and error is needed, and, although there are ways to help limit the set of possibilities, there isn’t a surefire method of arriving at a solution in ...

We almost have a solution to an exceptionally tricky mathematical riddle first posed 82 years ago. The problem, known as the Collatz conjecture, is easy to state. Start with any positive whole number.