84.--THE PIERROT'S PUZZLE.

From Amusements in Mathematics by Henry Ernest Dudeney.

There are just six different solutions to this puzzle, as follows:--

8 multiplied by 473 equals 3784 9 " 351 " 3159 15 " 93 " 1395 21 " 87 " 1287 27 " 81 " 2187 35 " 41 " 1435

It will be seen that in every case the two multipliers contain exactly the same figures as the product.

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84.--THE PIERROT'S PUZZLE.: Amusements in Mathematics by Henry Ernest Dudeney | amphi