Henry Ernest Dudeney/Puzzles and Curious Problems/311 - Domino Multiplication
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Puzzles and Curious Problems by Henry Ernest Dudeney: $311$
- Domino Multiplication
- We have received the following entertaining puzzle from W.D.W., of Philadelphia, Pa.:
- Four dominoes may be so placed as to form a simple multiplication sum if we regard the pips as figures.
- The example here shown will make everything perfectly clear.
- Now, the puzzle is, using all the $28$ dominoes to arrange them so as to form $7$ such little sums in multiplication.
- No blank may be placed at the left end of the multiplicand or product.
Click here for solution
Sources
- 1932: Henry Ernest Dudeney: Puzzles and Curious Problems ... (previous) ... (next): Crossing River Problem, and Problems Concerning Games and Puzzle Games: $311$. -- Domino Multiplication
- 1968: Henry Ernest Dudeney: 536 Puzzles & Curious Problems ... (previous) ... (next): Domino Puzzles: $490$. Domino Multiplication