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B
14
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C
8
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D
20
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Solution
The correct option is B 14 In a magic square, the sum of numbers on all the rows, columns and diagonals would be the same, which is called as the magic sum.
Let's take the last row to calculate the magic sum.
Magic sum = 13 + 18 + 11 = 42
Let's take the middle row.
10 + 18 = 28.
=> Missing number = 42 - 28 = 14