Curiosities

21st Day, 21st Year and 21st Century: Upside-Down Semi-Magic Squares of Order 21 With Digits 2 and 1

Semi-Magic Squares of Order 21 With Digits 2 and 1

Above two magic square are semi-magic squares with locks of orders 3 and 7. The semi-magic sums of semi-magic squares is 35555555552. Instead of semi-magic we can construct magic square also, but in this it will be without blocks.

Morever, the above magic squares are upside-down. They are mirror-looking too, but in this case 2 become 5, i.e., it is no more with 2 and 1. It will be with 5 and 1.

Categories: Curiosities

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