Four Fours/125

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Puzzle

Using exactly $4$ instances of the number $4$, the task is to write an expression for $125$, using whatever arithmetical operations you consider necessary.


Solutions

Solution $1$

$125 = \paren {\dfrac {\sqrt 4} {.4} }! + \dfrac {\sqrt 4} {.4}$

Solution $2$

$125 = \paren {\dfrac {\sqrt 4} {.4} } \uparrow \sqrt {\dfrac {4} {.\dot 4} }$


Also see

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