If `D_(1)` and `D_(2)` are two `3xx3` diagonal matrices, then which of the following is/are true ?

D is a 3xx3 diagonal matrix. Which of the following statements are not true?

If D_(1) and D_(2) are two 3x3 diagnal matrices where none of the diagonal elements is zero, then

If A and B are 3xx3 matrices and abs(A)ne 0, which of the following are 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?

If P and Q are symmetric matrices and PQ=QP then which of the following is/are true (A) QP^-1=P^-1Q (B) PQ is skew symmetric (C) P^-1Q is symmetric (D) both (a) and (c)

Which of the following are true: \ (2xx3)! =2!xx3!

If A and B are two square matrices of order 3xx3 which satify AB=A and BA=B , then Which of the following is true ?

Let X \ a n d \ Y be two arbitrary, 3xx3 , non-zero, skew-symmetric matrices and Z be an arbitrary 3xx3 , non-zero, symmetric matrix. Then which of the following matrices is (are) skew symmetric?

Let A be a 3xx3 matrix satisfying A^3=0 , then which of the following statement(s) are true (a) |A^2+A+I|!=0 (b) |A^2-A+O|=0 (c) |A^2+A+I|=0 (d) |A^2-A+I|!=0