![Endless afternoons playing “Four fours” and other math games on paper | by LucianoSphere (Luciano Abriata, PhD) | Cantor's Paradise Endless afternoons playing “Four fours” and other math games on paper | by LucianoSphere (Luciano Abriata, PhD) | Cantor's Paradise](https://miro.medium.com/v2/resize:fit:1400/1*u9kJtUCOD4aLUPxbN01qPw.png)
Endless afternoons playing “Four fours” and other math games on paper | by LucianoSphere (Luciano Abriata, PhD) | Cantor's Paradise
![Yasantha Rajakarunanayake on X: "Here is a cool math puzzle. Express each number with four fours.. and common symbols. First 20 numbers shown below. How high can you go.. consecutively without gaps Yasantha Rajakarunanayake on X: "Here is a cool math puzzle. Express each number with four fours.. and common symbols. First 20 numbers shown below. How high can you go.. consecutively without gaps](https://pbs.twimg.com/media/ECNxNBeUYAE7-fF.jpg)
Yasantha Rajakarunanayake on X: "Here is a cool math puzzle. Express each number with four fours.. and common symbols. First 20 numbers shown below. How high can you go.. consecutively without gaps
![Sarah Carter on X: "Can you solve the fours challenge? This is a simplified version of the classic four fours puzzle! Use exactly four fours and your choice of arithmetical symbols to Sarah Carter on X: "Can you solve the fours challenge? This is a simplified version of the classic four fours puzzle! Use exactly four fours and your choice of arithmetical symbols to](https://pbs.twimg.com/media/FqQI-4cXwAE6qbQ.jpg)