If A is a square matrix of order 3 such that |A|=2, then |adj (adj A)| is :
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 16
$|A|=2$
order = 3
$|adj\,A|=|A|^{3-1}=2^2=4$
so $|adj\,adj\,A|=4^2=16$
If A is a square matrix of order 3 such that |A|=2, then |adj (adj A)| is :
Correct answer: option 3
The correct answer is Option (3) → 16
$|A|=2$
order = 3
$|adj\,A|=|A|^{3-1}=2^2=4$
so $|adj\,adj\,A|=4^2=16$