From Jeremy Dixon comes a “toasty” treat of a puzzle: You have a toast rack with five slots, arranged in an array. Each slot has a slice of toasted bread, which you are removing one at a time. However ...

The Babylonians used separate combinations of two symbols to represent every single number from 1 to 59. That sounds pretty confusing, doesn’t it? Our decimal system seems simple by comparison, with ...

Math fans, the New York Times has launched a new daily numbers game comparable to its beloved Wordle, just for you. On April 10, the Times revealed that it had temporarily launched Digits, a ...