MCQ
Statement $1$ : If $A$ and $B$ be two sets having $p$ and $q$ elements respectively, where $q > p$. Then the total number of functions from set $A$ to set $B$ is $q^P$.
Statement $2$ : The total number of selections of $p$ different objects out of $q$ objects is ${}^q{C_p}$.
  • A
    Statement $1$ is true, Statement $2$ is false
  • B
    Statement $1$ is true, Statement $2$ is true,Statement $2$ is not a correct explanation of Statement $1$
  • C
    Statement $1$ is false, Statement $2$ is true
  • Statement $1$ is true, Statement $2$ is true,Statement $2$ is a correct explanation of Statement $1$

Answer

Correct option: D.
Statement $1$ is true, Statement $2$ is true,Statement $2$ is a correct explanation of Statement $1$
d
statement-$1$ : $n\left( A \right) = p,n\left( B \right) = q,q > p$

Total number of funtions from $A \to B = {q^p}$

It is a true statement.

Statement-$2$ : The total number of selection of $p$ different objects out of $q$ objects is $^q{C_p}$.

It is also a true statement and it is a correct explanation for statement- $1$ also.

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

The value of $b$ for which the function $f(x)=\sin x-b x+c$ is strictly decreasing for $x \in R$ is given by
If $f:R \to R$, is a continuous function such that $\left| {f\left( x \right) - f\left( y \right)} \right| \geqslant \left| {{e^x} - {e^y}} \right|\forall x,y \in R$ then $f(x)$ is
Let $N$ denote the set of all natural numbers. Define two binary relations on $N$ as $R_1 = \{(x,y) \in  N \times  N : 2x + y= 10\}$ and $R_2 = \{(x,y) \in  N\times  N : x+ 2y= 10\} $. Then
If  $\vec{a}\ \text{and}\ \vec{b}$ are two collinear vectors, then which of the following are incorrect:
  1. $\vec{b}=\lambda\vec{a},\ \text{for some scalar}\ \lambda$
  2. $\vec{a}=\pm\vec{b}$
  3. The respective components of $\vec{a}\ \text{and}\ \vec{b}$ are proportional.
  4. Both the vectors $\vec{a}\ \text{and}\ \vec{b}$ have same direction, but different magnitudes.
If A and B are two events such that $\text{P(A)}\neq0$ and $\text{P(B)}\neq1,$ then $\text{P}(\overline{\text{A}}|\overline{\text{B}})=$
  1. $1-\text{P}(\text{A}|\text{B})$
  2. $1-\text{P}(\overline{\text{A}}|\text{B})$
  3. $\frac{1-\text{P}(\text{A}\cup\text{B})}{\text{P}(\overline{\text{B}})}$
  4. $=\frac{\text{P}(\overline{\text{A}})}{\text{P}(\overline{\text{B}})}$
Let A = {1, 2, 3}. Then, the number of relations containing (1, 2) and (1, 3) which are reflexive and symmetric but not transitive is:
  1. 1
  2. 2
  3. 3
  4. 4
The function $(x-\sin x)$ decreases for
If $f\left( x \right) + 2f\left( {\frac{1}{x}} \right) = 3x,x \ne 0$ and $S = \left\{ {x \in R:f\left( x \right) = f\left( { - x} \right)} \right\}$;then $S :$
Let $\text{y}=\sqrt{\sin\text{x}+\text{y}},$ then $\frac{\text{dy}}{\text{dx}}=$
  1. $\frac{\sin\text{x}}{2\text{y}-1}$
  2. $\frac{\sin\text{x}}{1-2\text{y}}$
  3. $\frac{\cos\text{x}}{1-2\text{y}}$
  4. $\frac{\cos\text{x}}{2\text{y}-1}$
$\int_{}^{} {\frac{{{{\sin }^8}x - {{\cos }^8}x}}{{1 - 2{{\sin }^2}x{{\cos }^2}x}}\;dx = } $