The minors of - 4 and 9 and the co-factors of - 4 and 9 in determinant \[\,\left| \,\begin{matrix} -1 & -2 & 3 \\ -4 & -5 & -6 \\ -7 & 8 & 9 \\ \end{matrix}\, \right|\] are respectively [J & K 2005]

The minors of - 4 and 9 and the co-factors of - 4 and 9 in determinant

1.	The minors of - 4 and 9 and the co-factors of - 4 and 9 in determinant \[\,\left\| \,\begin{matrix} -1 & -2 & 3 \\ -4 & -5 & -6 \\ -7 & 8 & 9 \\ \end{matrix}\, \right\|\] are respectively [J & K 2005]
A.	42, 3; - 42, 3
B.	-42, -3; 42, -3
C.	42, 3; - 42, - 3
D.	42, 3; 42, 3
Answer» C. 42, 3; - 42, - 3

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The minors of - 4 and 9 and the co-factors of - 4 and 9 in determinant \[\,\left| \,\begin{matrix} -1 & -2 & 3 \\ -4 & -5 & -6 \\ -7 & 8 & 9 \\ \end{matrix}\, \right|\] are respectively [J & K 2005]

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