Four Fours/Lemmata/Three Fours/53/Solutions/1
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Puzzle: Three Fours: $53$
Using exactly $3$ instances of the number $4$, the task is to write an expression for $53$, using whatever arithmetical operations you consider necessary.
Solution
- $53 = \dfrac {4! - {. \dot 4} } {. \dot 4}$