If matrix \[A=\left[ \begin{matrix} 3 & 2 & 4 \\ 1 & 2 & -1 \\ 0 & 1 & 1 \\ \end{matrix} \right]\]and \[{{A}^{-1}}=\frac{1}{K}adj(A),\] then \[K\]is [UPSEAT 2002]

If matrix \[A=\left[ \begin{matrix} 3 & 2 & 4 \\ 1 & 2 & -

1.	If matrix \[A=\left[ \begin{matrix} 3 & 2 & 4 \\ 1 & 2 & -1 \\ 0 & 1 & 1 \\ \end{matrix} \right]\]and \[{{A}^{-1}}=\frac{1}{K}adj(A),\] then \[K\]is [UPSEAT 2002]
A.	7
B.	-7
C.	\[\frac{1}{7}\]
D.	11
Answer» E.

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If matrix \[A=\left[ \begin{matrix} 3 & 2 & 4 \\ 1 & 2 & -1 \\ 0 & 1 & 1 \\ \end{matrix} \right]\]and \[{{A}^{-1}}=\frac{1}{K}adj(A),\] then \[K\]is [UPSEAT 2002]

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