Four Fours/22
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Puzzle
Using exactly $4$ instances of the number $4$, the task is to write an expression for $22$, using whatever arithmetical operations you consider necessary.
Solutions
Solution $1$
- $22 = 4! - \dfrac {4 + 4} 4$
Solution $2$
- $22 = 4 \times 4 + 4 + \sqrt 4$
Solution $3$
- $22 = 4! + 4 - 4 - \sqrt 4$