Four Fours/56

Puzzle

Using exactly $4$ instances of the number $4$, the task is to write an expression for $56$, using whatever arithmetical operations you consider necessary.

Solutions

Solution $1$

$56 = 4! + 4! + 4 + 4$

Solution $2$

$56 = \dfrac {4! - .4 \times 4} {.4}$

Solution $3$

$56 = \dfrac {4!} {. \dot 4} + 4 - \sqrt 4$

Also see

Previous  ... Next