Magic Hexagon
Make the sum of each of the rows equal certain numbers. In the hexagons below, place the numbers 1-19 so that rows, columns and diagonals all add up to 38. (Source: Eric W. Weisstein) Extension: Place the numbers 1-19 in the circles so the sum of each of the rows with three circles around the […]
Magic Square
Make the sum of the numbers in the rows, columns, and diagonals of a grid all equal the same integer.
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