Nine of the
natural numbers from 1 to 49 have been placed in the 7x7 grid as shown in the figure given below.
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5
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15
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35
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45
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25
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40
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20
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30
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10
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Insert the remaining numbers in the grid to produce
a magic square so that the sum of the numbers in any of the horizontal rows, vertical
columns and corner to corner diagonals is 175.
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