If A and B are square matrices such that AB = I and BA = I, then B is
unit matrix
Null matrix
Multiplicative inverse matrix of A
-A
If a matrix is of order 2 × 3, then the number of elements in the matrix is
5
6
2
3
If then the order of A is
2 × 1
2 × 2
1 × 2
3 × 2
If and A + B = 0, then B is
If then the values of x and y respectively are
-2,7
2,-7
, then the values of a,b,c and d respectively are
-1,0,0,-1
1,0,0,1
-1,0,1,0
1,0,0,0
Matrix A[aij]mxn is a square matrix if
m < n
m > n
m = 1
m = n
If(5 x 1) =(20), then x =
7
-7
0
If , then A2 is
If , then the values of x and y are
5,-4
-5,4
-5,-4
5,4
