Four fours

Rarity: Common

The most frequent rarity: most Wikipedia articles become Commons.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

Class

Work

Domain

Arts and letters

Knowledge cost

3

In collections

Nobody has pulled it yet.

What Wikipedia says

Four fours is a mathematical puzzle, the goal of which is to find the simplest mathematical expression for every whole number from 0 to some maximum, using only common mathematical symbols and the digit four. No other digit is allowed.

Excerpt from the Wikipedia article “Four fours”, under the CC BY-SA 4.0 license. Read the article on Wikipedia