Let A and B be two square matrices of order 3 and `AB=O_3`, wher `O_3` denotes the null matrix of order 3. Then,

Let A and B be two square matrices of order 3 and AB = O_(3) , where O_(3) denotes the null matrix of order 3. then

If A and B are square matrices of order 3, then

If A and B are square matrices of order 3, then

If A,B are square matrices of order 3 , then :

If A and B are two square matrix of order 3xx3 and AB=A,BA=B then A^(2) is:

If A and B are square matrices of the same order and AB=3I , then A^(-1)=

Let A be a square matrix of order 3 whose all entries are 1 and let I_3 be the identity matrix of order 3. Then the matrix A-3I_3 is

If A and B are square matrices of order 3, A is nonsingular and A . B=O, then B is

If A and B are square matrices of the same order and AB=3l then A^(-1) is equal to