Mathematics

Problem

The minors of

-4

and

9

and the co-factors of

-4

and

9

in determinant

\begin{vmatrix} -1 & -2 & 3 \\ -4 & -5 & -6 \\ -7 & 8 & 9 \end{vmatrix}

are respectively (a) 42, 3; -42, 3 (b) -42, -3; 42, -3 (c) 42, 3; -42, -3 (d) 42, 3; 42, 3 (a) 42, 3; -42, 3 (b) -42, -3; 42, -3 (c) 42, 3; -42, -3 (d) 42, 3; 42, 3

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