Four Fours/48
Jump to navigation
Jump to search
Puzzle
Using exactly $4$ instances of the number $4$, the task is to write an expression for $48$, using whatever arithmetical operations you consider necessary.
Solutions
Solution $1$
- $48 = 4! + 4! + 4! - 4!$
Solution $2$
- $48 = 4! \times \dfrac {4 + 4} 4$
Solution $3$
- $48 = \dfrac {4 \times 4! \times \sqrt 4} 4$
Solution $4$
- $48 = 4 \times \paren {4 + 4 + 4}$
Solution $5$
- $48 = 44 + \sqrt 4 + \sqrt 4$