A) \[|A|{{\,}^{n-1}}A\]
B) \[|A|{{\,}^{n-2}}A\]
C) \[|A{{|}^{n}}n\]
D) None of these
Correct Answer: B
Solution :
We know by the fundamental concept that\[adj\,(adj\,A)=|A{{|}^{n-2}}A\].
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