Question

The value of a third order determinant is 5, then the value of the square

of the determinant formed by its co-factors will be :


(a) 125 (b) 250 (c) 25 (d) 5​

Answer 1

Answer:

value of determinant is the sum of the products of the elements of any row or column with the corresponding co-factors

Give value of determinant=5

order of determinant=3×3

Thus, let A be will the value of determinant n be the order. then the square of the determinant formed by its cofactor.