Two mathematicians have proved that a straightforward question—how hard is it to untie a knot?—has a complicated answer.

Candidates can download the CAT previous year question papers PDF. Practice the CAT question paper of the last 5 years.

Machine learning models are designed to take in data, to find patterns or relationships within those data, and to use what ...

For decades, construction of smaller, entry-level homes has been falling. But there are ways to find an affordable first home ...

Examining mistakes gives students a chance to discuss misconceptions openly and find new approaches to solving problems.

Artificial intelligence (AI) is increasingly prevalent, integrated into phone apps, search engines and social media platforms ...

1. Fast and Slow Piles. This works well as a starting or closing activity. Students sort math fact cards into fast and slow piles. This visual way of tracking facts highlights which facts come ...

On October 25, 2025, the author and game-show host Ken Jennings joined the senior editor Tyler Foggatt onstage at the 26th ...

The numbers did not compute. Even before Terry Rozier dropped out of the 2023 NBA game in which he's accused of rigging his statistics, computers at an "integrity monitor" firm flagged a flood of bets ...

Timothy Mellon is a billionaire and a major financial backer of President Trump. Timothy Mellon during a property tour in 1981. A grandson of former Treasury Secretary Andrew W. Mellon, Mr. Mellon was ...