[" Let "A" and "B" are two square matrices such that "],[AB" is a null matrix.Then which of the following is "],[" true? "]

If A and B are two matrices such that their product AB is a null matrix, then

If A and B are two matrices such that their product AB is a null matrix, then

If A and B are two matrices such that their product AB is a null matrix, then

If A and B are two matrices such that their product AB is a null matrix, then

If A and B are two square matrices such that they commute, then which of the following is true?

If A and B are two square matrices such that AB=I, then which of the following is not true?

If A and B are two square matrices such that AB=I, then which of the following is not true?

If A and B are two square matrices such that they commute,then which of the following is true?

Let A and B be two square matrices such that A B=A and B A=B, then A^2=

"Let "A" and "B" are two square idempotent matrices such that (AB+-BA) is a null matrix,then Sum of all possible values of det(A+B)" is"