Four Fours/50/Solutions/3
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Puzzle: Four Fours: $50$
Using exactly $4$ instances of the number $4$, the task is to write an expression for $50$, using whatever arithmetical operations you consider necessary.
Solution
- $50 = 44 + 4 + \sqrt 4$
Sources
- 1926: Henry Ernest Dudeney: Modern Puzzles ... (previous) ... (next): Arithmetical and Algebraical Problems: Digital Puzzles: $58$. -- The Two Fours
- 1964: L.H. Clarke: Fun with Figures ... (previous) ... (next): Solutions: $(46)$
- 1968: Henry Ernest Dudeney: 536 Puzzles & Curious Problems ... (previous) ... (next): Arithmetical and Algebraical Problems: Digital Puzzles: $109$. The Two Fours