Henry Ernest Dudeney/Puzzles and Curious Problems/279 - Roses, Shamrocks, and Thistles

by : $279$

 * Roses, Shamrocks, and Thistles
 * Place the numbers $1$ to $12$ (one number in every design) so that they shall add up to the same sum in the following $7$ different ways --
 * viz., each of the two centre columns, each of the two central rows,
 * the four roses together, the four shamrocks together, and the four thistles together.


 * Dudeney-Puzzles-and-Curious-Problems-279.png