Henry Ernest Dudeney/Puzzles and Curious Problems/116 - Transferring the Figures
Jump to navigation
Jump to search
Puzzles and Curious Problems by Henry Ernest Dudeney: $116$
- Transferring the Figures
- If we wish to multiply $571 \, 428$ by $5$ and divide by $4$,
- we need only transfer the $5$ from the beginning to the end for the correct answer $714 \, 285$.
- Can you find a number that we can multiply by $4$ and then divide the product by $5$ in the same simple manner,
- by moving the first figure to the end?
- Of course $714 \, 285$, just given, would do if we were allowed to transfer from the end to the beginning.
- But it must be from the beginning to the end!
Click here for solution
Sources
- 1932: Henry Ernest Dudeney: Puzzles and Curious Problems ... (previous) ... (next): Arithmetical and Algebraical Problems: Various Arithmetical and Algebraical Problems: $116$. -- Transferring the Figures
- 1968: Henry Ernest Dudeney: 536 Puzzles & Curious Problems ... (previous) ... (next): Arithmetical and Algebraical Problems: Miscellaneous Puzzles: $190$. Transferring the Figures