Four Fours/Lemmata/Three Fours/10

Puzzle

Using exactly $3$ instances of the number $4$, the task is to write an expression for $10$, using whatever arithmetical operations you consider necessary.

Solutions

Solution $1$

$10 = \dfrac {4! - 4} {\sqrt 4}$

Solution $2$

$10 = 4 + 4 + \sqrt 4$

Solution $3$

$10 = \dfrac {4 + {. \dot 4} } {. \dot 4}$

Also see

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