# 7. In a magic square each row, column and diagonal have the same sum. Check if the following is a magic square. (ii)     1 -10 0 -4 -3 -2 -6 4 -7

H Harsh Kankaria

Taking Rows-

$1-10+0 = -9$

$-4-3-2 = -9$

$-6+4-7= -9$

Taking Columns-

$1-4-6=-9$

$-10-3+4 = -9$

$0-2-7= -9$

Taking Diagonals-

$0-3-6= -9$

$1-3-7=-9$

As the sum of all the rows, columns and diagonals are equal, this is a magic square.

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