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.

Amusements in Mathematics · 第 590 / 970 题