Four Fours/79
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Puzzle
Using exactly $4$ instances of the number $4$, the task is to write an expression for $79$, using whatever arithmetical operations you consider necessary.
Solutions
Solution $1$
- $79 = \paren {\dfrac 4 {. \dot 4} }^{\sqrt 4} - \sqrt 4$
Solution $2$
- $79 = \dfrac {4! + {. \dot 4} } {. \dot 4} + 4!$