Matrices Have Property
If a Matrix is square of order n then $\left | Adj A \right |=\left ( det A \right )^{n-1}=\left | A \right |^{n-1}$
Similarly $\left | Adj\left ( Adj A \right ) \right |=\left | A \right |^{\left ( n-1 \right )^{2}}$
Another Property is Product of Eigen Values = Determinant of matrix
Product of Eigen values = 24
$\left | Adj\left ( Adj A \right ) \right |=\left | 24 \right |^\left ( 3-1 \right ){^{2}}$=$\left | 24 \right |^{4}$= 331776