Question 1 :
If $\begin{vmatrix} x-4 &amp; 2x &amp; 2x \\ 2x &amp; x-4 &amp; 2x \\ 2x &amp; 2x &amp; x-4 \end{vmatrix}$ = $(A+Bx)(x-A)^2$,<br>then the ordered pair $(A , B)$ is equal to:

Question 2 :
Out of the following matrices, choose that matrix which is a scalar matrix.

Question 3 :
If $A = \bigl(\begin{smallmatrix}1 &amp; -2\\ -3 &amp; 4\end{smallmatrix}\bigr)$ and $A + B = O$, then B is<br>

Question 4 :
If $A$ is $2\times 3$ matrix and $AB$ is a $2\times 5$ matrix, then $B$ must be a

Question 5 :
A is of order $m \times n$ and B is of order $p \times q$, addition of A and B is possible only if<br>

Question 6 :
Let $A =&#160;\begin{bmatrix} -2 &amp; 7 &amp; \sqrt{ 3}&#160; \\ 0 &amp; 0 &amp; -2 \\ 0 &amp; 2 &amp; 0 \end{bmatrix}&#160;$&#160; and $A^4 = \lambda$. I, then $\lambda $ is

Question 7 :
Let $C_k =$ $^nC_k$ for $0\leq k\leq n$ and<br>$A_k=\begin{bmatrix}C_{k-1}^2&amp;0 \\0 &amp;C_k^2 \end{bmatrix}$ for $k\geq 1$, and $A_1+A_2+ ... + A_n=\begin{bmatrix}k_1 &amp;0 \\0 &amp;k_2\end{bmatrix}$, then<br>

Question 8 :
If $A = \bigl(\begin{bmatrix}7 &amp;2 \\ 1 &amp; 3\end{bmatrix}\bigr)$ and $A + B = \bigl(\begin{bmatrix} -1&amp; 0\\ 2 &amp; -4\end{bmatrix}\bigr)$, then the matrix B =<br/>

Question 9 :
If $A = \dfrac {1}{\pi} \begin{bmatrix}\sin^{-1}(\pi x)&#160;&amp; \tan^{-1} \left (\dfrac {\pi}{\pi}\right )\\ \sin^{-1} \left (\dfrac {x}{\pi}\right )&#160;&amp;\cot^{-1} (\pi x)\end{bmatrix}, B =\dfrac {1}{\pi}&#160;\begin{bmatrix}-\cos^{-1}(\pi x)&#160;&amp;\tan^{-1} \left (\dfrac {x}{\pi}\right )&#160;\\ \sin^{-1} \left (\dfrac {x}{\pi}\right )&#160;&amp; -\tan^{-1} (\pi x)\end{bmatrix}$, then $A - B$ is equal to<br/>

Question 10 :
$\displaystyle \begin{vmatrix} 1 &amp; a &amp; {a}^{2}-bc \\ 1 &amp; b &amp; {b}^{2}-ca \\ 1 &amp; c &amp; {c}^{2}-ab \end{vmatrix}$=?

Question 11 :
Consider $A$ and $B$ two square matrices of same order. Select the correct alternative.

Question 12 :
If the number of elements in a matrix is $60$ then how many different order of matrix are possible&#160;

Question 13 :
If A =$\begin{bmatrix}1 &amp; 2 \\ 3 &amp; 4 \end{bmatrix}$, B =$\begin{bmatrix}2 &amp; 3 \\ 4 &amp; 5 \end{bmatrix}$, and 4A - 3B + C = 0, then C =

Question 14 :
Let $n\ge 2$ be an integer,<br/>$A=\begin{bmatrix} \cos { \left( { \dfrac{2\pi}n} \right) &#160;} &#160;&amp; \sin { \left(\dfrac{2\pi}n \right) &#160;} &#160;&amp; 0 \\ -\sin { \left( \dfrac{2\pi}n \right) &#160;} &#160;&amp; \cos { \left(\dfrac{2\pi}n \right) &#160;} &#160;&amp; 0 \\ 0 &amp; 0 &amp; 1 \end{bmatrix}$ and $I$ is the identity matrix of order $3$., then following of which is correct

Question 15 :
$\left[ \begin{matrix} x \\ 3 \end{matrix}\begin{matrix} 6 \\ 2x \end{matrix} \right]$ is a singular matrix, then $x$ is equal to