Four Fours/6/Solutions/3
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Puzzle: Four Fours: $6$
Using exactly $4$ instances of the number $4$, the task is to write an expression for $6$, using whatever arithmetical operations you consider necessary.
Solution
- $6 = \sqrt 4 + \sqrt 4 + 4 - \sqrt 4$
Sources
- 1964: L.H. Clarke: Fun with Figures ... (previous) ... (next): Solutions: $(46)$