Types of Matrices

The value of $x+y$ from the following equation is $2\left(\begin{array}{c}1\\ 0\end{array}\begin{array}{c}3\\ x\end{array}\right)+\left(\begin{array}{c}y\\ 1\end{array}\begin{array}{c}0\\ 2\end{array}\right)=\left(\begin{array}{c}5\\ 1\end{array}\begin{array}{c}6\\ 8\end{array}\right)$.

Wihch of the following is a diagonal matrix.

Which of the following is a diagonal matrix.

Wihch of the following is a diagonal matrix.

Identify scalar matrix from the following matrices.

Which of the following represents a column matrix? 

The matrix $A=\left[\begin{array}{ccc}-7& 0& 0\\ 0& -7& 0\\ 0& 0& -7\end{array}\right]$ is 

Find the values of $x$ for which

$\left|\begin{array}{ll}x& 2\\ 18& x\end{array}\right|=\left|\begin{array}{ll}6& 2\\ 18& 6\end{array}\right|$

If $\left[\begin{array}{cc}a+b& 4\\ -3& ab\end{array}\right]=\left[\begin{array}{cc}6& 4\\ -3& 8\end{array}\right]$ then the values of $a$ and $b$ are

If $\left[\begin{array}{ccc}{x}^2& 2& 3\\ 4& 7& 2\\ 3& y^2& z^2\end{array}\right]+\left[\begin{array}{ccc}3x& 4& 6\\ 2& -2& t\\ 3& 4y& 8z\end{array}\right]=\left[\begin{array}{ccc}-2& 6& 9\\ 6& 5& 4\\ 6& -3& -12\end{array}\right]$, then find the values of $x, y, z,$ and $t$.

The matrix $A=\left[\begin{array}{lll}0& 0& 5\\ 0& 5& 0\\ 5& 0& 0\end{array}\right]$ is a

Which one of the following is a scalar matrix?

The matrix $A=\left[\begin{array}{ccc}2& -2& -4\\ -1& 3& 4\\ 1& -2& -3\end{array}\right]$ is

The matrix $A=\left[\begin{array}{cc}ab& b^2\\ -a^2& -ab\end{array}\right]$ is

Which institution was responsible for collecting land revenue in the Mahalwari system?

What type of funds involve ownership capital?

What is the primary characteristic of equity capital?