If A is a matrix of order 3, and |adj A| = 36, then which of the following statements is true for |A|?
Answer & explanation
Correct answer: option 3
|adj A| = \( { |A| }^{ n-1 } \), where n is the order of the matrix
|adj A| = \( { |A| }^{ 3-1 } \)
36 = \( { |A| }^{ 2 } \)
|A| =6 or -6