If A is a matrix of order 4, and |A| = -3, then what is the value of |adj A|?
Answer & explanation
Correct answer: option 2
|adj A| = \( { |A| }^{ n-1 } \), where n is the order of the matrix
|adj A| = \( { |A| }^{ 4-1 } \)
|adj A| = \( { (-3) }^{ 4-1 } \)
|adj A| = -27