Q10 of 45 Page 1

If write the cofactor of the element a32 .

We know that cofactor of aij = Aij = (-1)i+j Mij


Where Mij = Minor = Determinant of order n – 1



⇒ Cofactor of a32 = A32 = (-1)3+2 M32


= (-1)5 (-11)


= (-1) (-11)


= 11


∴ Cofactor of the element a32 = 11


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