Let A be a square matrix of order n.
Statement-1: $|adj (adj\, A)|=|A|^{(n-1)^2}$
Statement-2: $adj (adj\, A) =|A|^{n-2} A$
Answer & explanation
Correct answer: option 1
Statement-1 is true
$∴|adj (adj\, A)|=||A|^{n-2}A|=|A|^{(n-2)n}|A|$
$⇒|adj (adj\, A)|=|A|^{n^2-2n+1}=|A|^{(n-1)^2}$