The cofactor of the element '4' in the determinant \[\left| \,\begin{matrix} 1 & 3 & 5 & 1 \\ 2 & 3 & 4 & 2 \\ 8 & 0 & 1 & 1 \\ 0 & 2 & 1 & 1 \\ \end{matrix}\, \right|\] is [MP PET 1987]

The cofactor of the element '4' in the determinant \[\left| \,\begin{m

1.	The cofactor of the element '4' in the determinant \[\left\| \,\begin{matrix} 1 & 3 & 5 & 1 \\ 2 & 3 & 4 & 2 \\ 8 & 0 & 1 & 1 \\ 0 & 2 & 1 & 1 \\ \end{matrix}\, \right\|\] is [MP PET 1987]
A.	4
B.	10
C.	-10
D.	-4
Answer» C. -10

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The cofactor of the element '4' in the determinant \[\left| \,\begin{matrix} 1 & 3 & 5 & 1 \\ 2 & 3 & 4 & 2 \\ 8 & 0 & 1 & 1 \\ 0 & 2 & 1 & 1 \\ \end{matrix}\, \right|\] is [MP PET 1987]

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