Four fours is a mathematical puzzle. The goal of four fours 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). Most versions of four fours require that each expression have exactly four fours, but some variations require that each expression have the minimum number of fours.
Read more about Four Fours: Rules, Solutions, Algorithmics of The Problem, Excerpt From The Solution To The Six Sixes Problem
Famous quotes containing the word fours:
“Art—the one achievement of Man which has made the long trip up from all fours seem well advised.”
—James Thurber (1894–1961)