Henry Ernest Dudeney/Puzzles and Curious Problems/102 - Juggling with Digits
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Puzzles and Curious Problems by Henry Ernest Dudeney: $102$
- Juggling with Digits
- Arrange the ten digits in three arithmetical sums,
- employing three of the four operations of addition, subtraction, multiplication and division,
- and using no signs except the ordinary ones implying those operations.
- Here is an example to make it quite clear:
- $3 + 4 = 7$; $9 - 8 = 1$; $30 \div 6 = 5$.
- But this is not correct, because $2$ is omitted, and $3$ is repeated.
Click here for solution
Sources
- 1932: Henry Ernest Dudeney: Puzzles and Curious Problems ... (previous) ... (next): Arithmetical and Algebraical Problems: Digital Puzzles: $102$. -- Juggling with Digits
- 1968: Henry Ernest Dudeney: 536 Puzzles & Curious Problems ... (previous) ... (next): Arithmetical and Algebraical Problems: Digital Puzzles: $132$. Juggling with Digits