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The set square was invented in America in 1860.
3x3 magic square 25 total
Think! What if the magic square had an even number of cells. There's your answer.
A square is a shape and a shape cannot be invented.
In an 8x8 magic square, the sum of each row, column, and diagonal is the same, known as the magic constant. For an n x n magic square, the magic constant can be calculated using the formula ( M = \frac{n(n^2 + 1)}{2} ). For an 8x8 magic square, this gives ( M = \frac{8(64 + 1)}{2} = 260 ). Therefore, the sum in the 1st row of an 8x8 magic square is 260.