CUET Preparation Today
If A is a matrix of order 4, and |adj A| = 8, then what is the value of |A| ? |
-2 2 Both (a) and (b) None of these |
2 |
|adj A| = \( { |A| }^{ n-1 } \), where n is the order of the matrix |adj A| = \( { |A| }^{ 4-1 } \) 8 = \( { |A| }^{ 3 } \) |A| = 2 |
