Four Fours/70

Puzzle

Using exactly $4$ instances of the number $4$, the task is to write an expression for $70$, using whatever arithmetical operations you consider necessary.

Solutions

Solution $1$

$70 = \dfrac {4!} {.4} + \dfrac 4 {.4}$

Solution $2$

$70 = 4! + 4! + 4! - \sqrt 4$

Solution $3$

$70 = \dfrac {4! + \sqrt 4 + \sqrt 4} {.4}$

Also see

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