Four Fours/25

Puzzle

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

Solutions

Solution $1$

$25 = \dfrac {4! \times 4 + 4} 4$

Solution $2$

$25 = \paren {4 + \dfrac 4 4}^{\sqrt 4}$

Solution $3$

$25 = 4! + \dfrac {\sqrt 4 + \sqrt 4} 4$

Also see

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