5 A
10 A
16 A
32 A
Null matrix
unit matrix
A
2A
Diagonal
Upper triangular
Scalar
Skew symmetric
None of these
-1
1
0
2
If A and B are square matrices of order 3 and |A| = -1, |B| = 3, then |3AB| =
-9
-81
-27
81
then 3 A - 4B =
If A = , then A + AT =
