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