If A is a square matrix of order 3 and |A|= 5, then [Adj A] A is ______________.
Answer & explanation
Correct answer: option 3
$A.adj\,A=|A|I$ as $|A|=5$
$=5I$
If A is a square matrix of order 3 and |A|= 5, then [Adj A] A is ______________.
Correct answer: option 3
$A.adj\,A=|A|I$ as $|A|=5$
$=5I$