Question
If any matrix has order $m \times n$, then number of elements :

Answer

(C) mn

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

If $\text{y}=\log\sqrt{\tan\text{x}},$ then the value of $\frac{\text{dy}}{\text{dx}}$ at $\text{x}=\frac{\pi}{4}$ is givne by:
  1. $\infty$
  2. $1$
  3. $0$
  4. $\frac{1}{2}$
If $\triangle=\begin{vmatrix}a_{11}&a_{12}&a_{13}\\a_{21}&a_{22}&a_{23}\\a_{31}&a_{32}&a_{33}\end{vmatrix}$ and $A_{ij}$ is cofactors of $a_{ij},$ then value of $\triangle$ is given by:
The value of the determinant $\begin{vmatrix} 5 &\text{amp; } 1 \\ 3 &\text{amp; } 2 \end{vmatrix}$
  1. 4
  2. 5
  3. 6
  4. 7
The objective function Z = 4x + 3y can be maximised subjected to the constraints $ 3\text{x}+4\text{y}\leq24,$ $8\text{x}+6\text{y}\leq48,$ $\text{x}\leq5,\text{y}\leq6;\text{x},\text{y}\leq0.$
Choose the correct answer from given four options in each of the Exercise:
If $x, y, z$ are all different from zero and $\begin{vmatrix}1+\text{x}&1&1\\1&1+\text{y}&1\\1&1&1+\text{z}\end{vmatrix}=0,$ then the value of $x^{-1} + y^{-1} + z^{-1}$ is:
Rolle's theorem is applicable in case of $\phi(\text{x})=\text{a}^{\sin\text{x}},\text{a}>\text{a}$ in:
  1. Any interval.
  2. Any interval $[0,\pi]$
  3. Any interval $\Big[0,\frac{\pi}{2}\Big]$
  4. None of these.
In an LPP, if the objective function Z = ax + by has the same maximum value on two corner points of the feasible region, then the number of points of which Zmax occurs is:
The magnitude of the vector $6 \hat{i}-2 \hat{j}+3 \hat{k}$ is
If $\sin^{-1}\Big(\frac{\text{x}^2-\text{y}^2}{\text{x}^2+\text{y}^2}\Big)=\log\text{a}$ then $\frac{\text{dy}}{\text{dx}}$ is equal to:
  1. $\frac{\text{x}^2-\text{y}^2}{\text{x}^2+\text{y}^2}$
  2. $\frac{\text{y}}{\text{x}}$
  3. $\frac{\text{x}}{\text{y}}$
  4. $\text{None of these.}$
The corner points of the feasible region for a Linear Programming problem are P(0,5) Q(1, 5) R(4, 2) and S(12, 0) The minimum value of the objective function Z = 2x + 5y is at the point.