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 $3$

$39 = 4! \times \sqrt 4 - \dfrac 4 {. \dot 4}$


Also see

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