If A is a square matrix of order 3 and |A| = 5, then |adj A| is :
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → 25
$|A| = 5$
$|Adj\,A|=|A|^{n-1}$
$n=3$
so $|Adj\,A|=5^2=25$
If A is a square matrix of order 3 and |A| = 5, then |adj A| is :
Correct answer: option 2
The correct answer is Option (2) → 25
$|A| = 5$
$|Adj\,A|=|A|^{n-1}$
$n=3$
so $|Adj\,A|=5^2=25$