JEE Math Practice Question
If the matrices A = $$\left[ {\begin{matrix} 1 & 1 & 2 \\ 1 & 3 & 4 \\ 1 & { - 1} & 3 \\ \end{matrix} } \right]$$, B = adjA and C = 3A, then $${{\left| {adjB} \right|} \over {\left| C \right|}}$$ is equal to :
- A.8
- B.2
- C.72
- D.16
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