Four Fours/39
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Puzzle
Using exactly $4$ instances of the number $4$, the task is to write an expression for $39$, using whatever arithmetical operations you consider necessary.
Solutions
Solution $1$
- $39 = 4! + 4! - \dfrac 4 {. \dot 4}$
Solution $2$
- $39 = \dfrac {4 \times 4 - .4} {.4}$
Solution $3$
- $39 = 4! \times \sqrt 4 - \dfrac 4 {. \dot 4}$