If A and B are square matrices of order 3, such that |A| = -1, |B| = 3 then |3 AB| = –
A. 1
B. 11
C. 9
D. 81
Answer:D
If A and B are square matrices of order 3, such that |A| = -1, |B| = 3 then |3 AB| = –
A. 1 B. 11 C. 9 D. 81