A set of dominoes can be arranged into a valid arithmetic sum:
and into a magic square:
From Joseph S. Madachy, Madachy’s Mathematical Recreations, 1966, and W.W. Rouse Ball, Mathematical Recreations and Essays, 1919.
A set of dominoes can be arranged into a valid arithmetic sum:
and into a magic square:
From Joseph S. Madachy, Madachy’s Mathematical Recreations, 1966, and W.W. Rouse Ball, Mathematical Recreations and Essays, 1919.