Four Fours/92

From ProofWiki
Jump to navigation Jump to search

Puzzle

Using exactly $4$ instances of the number $4$, the task is to write an expression for $92$, using whatever arithmetical operations you consider necessary.


Solutions

Solution $1$

$92 = 4! \times 4 - \sqrt 4 - \sqrt 4$

Solution $2$

$92 = \sqrt 4 \times \paren {4! \times \sqrt 4 - \sqrt 4}$

Solution $3$

$92 = 4 \times \paren {4! - \dfrac 4 4}$


Also see

Previous  ... Next