Franklin's magic squares

Franklin's magic squares

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Credit: AMERICAN PHILOSOPHICAL SOCIETY/SCIENCE PHOTO LIBRARY

Caption: Franklin's magic squares. 18th Century document by Benjamin Franklin, describing the method for making 'magical squares'. A magic square is an arrangement of numbers in a square grid, where the numbers in each row and each column, and the numbers in the main and secondary diagonals, all add up to the same number.

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Keywords: 1700s, 18th century, american, benjamin franklin, document, founding father, franklin squares, historical, history, magic square, magic squares, magical squares, math, mathematic, mathematical, mathematics, maths, no-one, nobody, politician, politicians, statesman, text, us

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