Henry Ernest Dudeney/Modern Puzzles/216 - Fifty-Seven to Nothing
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Modern Puzzles by Henry Ernest Dudeney: $216$
- Fifty-Seven to Nothing
- Place $6$ matches as shown, so as to represent the number $57$ in Roman numerals.
- Remove and replace any $2$ of them (without disturbing the others) to make an expression representing zero ($0$).
- There are two completely different solutions.
Dudeney's originally posted problem used cigarettes instead of matches.
Click here for solution $1$
Click here for solution $2$
Sources
- 1926: Henry Ernest Dudeney: Modern Puzzles ... (previous) ... (next): Unclassified Problems: $216$. -- Fifty-Seven to Nothing
- 1968: Henry Ernest Dudeney: 536 Puzzles & Curious Problems ... (previous) ... (next): Match Puzzles: $499$. Fifty-Seven to Nothing