If A is a matrix of order 3, and |A| = -5, then what is the value of |adj A| ?
Answer & explanation
Correct answer: option 1
|adj A| = \( { |A| }^{ n-1 } \), where n is the order of the matrix
|adj A| = \( { |A| }^{ 3-1 } \)
|adj A| = \( { (-5) }^{ n-1 } \)
|adj A| = 25