If A is a singular matrix, then adj A is
Answer & explanation
Correct answer: option 2
We have, $|A| = 0$.
Let A be a square matrix of order n. Then,
$|adj\, A|=|A|^{n-1}$
$⇒|adj\, A|= 0$
$⇒adj\, A$ is a singular matrix.
If A is a singular matrix, then adj A is
Correct answer: option 2
We have, $|A| = 0$.
Let A be a square matrix of order n. Then,
$|adj\, A|=|A|^{n-1}$
$⇒|adj\, A|= 0$
$⇒adj\, A$ is a singular matrix.