Four Fours/75

Puzzle

Using exactly $4$ instances of the number $4$, the task is to write an expression for $75$, using whatever arithmetical operations you consider necessary.

Solutions

Solution $1$

$75 = \dfrac {4! + 4 + \sqrt 4} {.4}$

Solution $2$

$75 = \dfrac {4! \times \sqrt 4 + \sqrt 4} {\sqrt {. \dot 4} }$

Solution $3$

$75 = \dfrac {44} {. \dot 4} - 4!$

Also see

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