Henry Ernest Dudeney/Puzzles and Curious Problems/90 - Summing the Digits
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Puzzles and Curious Problems by Henry Ernest Dudeney: $90$
- Summing the Digits
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Sources
- 1932: Henry Ernest Dudeney: Puzzles and Curious Problems ... (previous) ... (next): Arithmetical and Algebraical Problems: Digital Puzzles: $90$. -- Summing the Digits
- 1968: Henry Ernest Dudeney: 536 Puzzles & Curious Problems ... (previous) ... (next): Arithmetical and Algebraical Problems: Digital Puzzles: $127$. Summing the Digits