Q5. (i)
(ii) If A is a square matrix of order 3 and | A| =5, then find |adj A|.
(iii) If Ais a non-singular square matrix of order 3 such that |adj A| = 64, find | A |.
(iv) If Ais a square matrix of order 3 such that | A| = —2, then find |3 adj A|.
(v) If |A^-1| =5, then find the value of |A|.
(vi) If A = be such that A^-1 = kA, then find the value of k.
(vii) If A(adj A)= then find the value of |adj A|.

Solution