A) \[125\]
B) \[25\]
C) \[5\]
D) \[10\]
Correct Answer: B
Solution :
Given, \[A(adj\,\,A)=5I\] \[\therefore \] \[|A|I=5I\Rightarrow |A|=5\] \[\therefore \] \[|adj\,(A)=|A{{|}^{3-1}}=|A{{|}^{2}}={{(5)}^{2}}=25\]You need to login to perform this action.
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