A square array of numbers, usually positive integers, is called a magic square if the sums of the numbers in each row, each column, and both main diagonals are the same.The summation of the first row gives 42 , hence the summation of each row, column and diagonals should be 42.13+12+17=4212+F+16=42F+12+16=42F+28=42F=42−28F=14