Henry Ernest Dudeney/Puzzles and Curious Problems/39 - Surprising Relationship/Historical Note
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Historical Note on Puzzles and Curious Problems by Henry Ernest Dudeney: $39$ - Surprising Relationship
The original solution appears to have been the work of Dudeney himself.
As reported by Martin Gardner in ins $1968$ repackaging 536 Puzzles & Curious Problems, the other two solutions originated with Victor Meally.
Sources
- 1968: Henry Ernest Dudeney: 536 Puzzles & Curious Problems ... (previous) ... (next): Unclassified Puzzles: $519$. Surprising Relationship