This holiday-themed brainteaser looks simple, but it's quietly tripping up adults everywhere I’ve been out of school for decades, and I don’t spend my days solving equations (I’m more of a word person ...

You and I are sitting at a table with a pile of 50 quarters and an empty piggy bank. We will take turns placing anywhere from one to 10 quarters in the bank at a time. Whoever places the last quarter ...

A math puzzle is a type of brain teaser where the reader's critical thinking and problem-solving skills are tested. These ...