Four Fours/68

Puzzle

Using exactly $4$ instances of the number $4$, the task is to write an expression for $68$, using whatever arithmetical operations you consider necessary.

Solutions

Solution $1$

$68 = 4 \uparrow \sqrt {\dfrac 4 {. \dot 4} } + 4$

Solution $2$

$68 = \dfrac {4!} {.4} + 4 \times \sqrt 4$

Solution $3$

$68 = \dfrac {4!} {.4} + 4 + 4$

Solution $4$

$68 = 4 \times 4 \times 4 + 4$

Also see

Previous  ... Next