Four Fours/Lemmata/Three Fours/11

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Puzzle

Using exactly $3$ instances of the number $4$, the task is to write an expression for $11$, using whatever arithmetical operations you consider necessary.


Solutions

Solution $1$

$11 = \dfrac {4! - \sqrt 4} {\sqrt 4}$

Solution $2$

$11 = \dfrac {4 + .4} {.4}$

Solution $3$

$11 = \dfrac {44} 4$


Also see

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