Solution

(related to Problem: The Three Groups)

There are nine solutions to this puzzle, as follows, and no more: — * $12 \times 483 = 5,796$ * $27 \times 198 = 5,346$ * $42 \times 138 = 5,796$ * $39 \times 186 = 7,254$ * $18 \times 297 = 5,346$ * $48 \times 159 = 7,632$ * $28 \times 157 = 4,396$ * $4 \times 1,738 = 6,952$ * $4 \times 1,963 = 7,852$

The seventh answer is the one that is most likely to be overlooked by solvers of the puzzle.


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References

Project Gutenberg

  1. Dudeney, H. E.: "Amusements in Mathematics", The Authors' Club, 1917

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