Four Fours/Lemmata/Two Fours/24

Puzzle

Using exactly $2$ instances of the number $4$, the task is to write an expression for $24$, using whatever arithmetical operations you consider necessary.

Solutions

Solution $1$

$24 = \paren {\sqrt 4 + \sqrt 4}!$

Solution $2$

$24 = \paren {\sqrt 4 \times \sqrt 4}!$

Solution $3$

$24 = \map \Gamma 4 \times 4$

Also see

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