Recent questions tagged gate1994

33 votes
6 answers
61
41 votes
3 answers
65
18 votes
4 answers
66
The rank of matrix $\begin{bmatrix} 0 & 0 & -3 \\ 9 & 3 & 5 \\ 3 & 1 & 1 \end{bmatrix}$ is:$0$$1$$2$$3$
25 votes
1 answer
67
22 votes
2 answers
70
35 votes
6 answers
71
26 votes
3 answers
73
Let $A$ and $B$ be real symmetric matrices of size $n \times n$. Then which one of the following is true?$AA'=I$$A=A^{-1}$$AB=BA$$(AB)'=BA$
3 votes
1 answer
74