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CUET
-- Mathematics - Section B1
Matrices
If A is a square matrix of order 3 and |A| = 5, then |adj A| is :
5
25
125
625
The correct answer is Option (2) → 25
$|A| = 5$
$|Adj\,A|=|A|^{n-1}$
$n=3$
so $|Adj\,A|=5^2=25$