Brain teasers are a fun way to test one's thinking skills. These puzzles give the brain a quick workout. A recent challenge ...

Some of the most satisfying number puzzles require little mathematical know-how. In fact, cracking the one below calls for thinking that is quite nonmathematical. I don’t know where or when I first ...

A brain teaser is a kind of engaging mental exercise. The purpose of this challenge or riddle is to force you to look at things critically and creatively, often in ways you're not familiar with. A ...