MCQ
Let $A=\{1,2,3\}$ and consider the relation $R=\{(1,1),(2,2),(3,3),(1,2),(2,3),(1,3)\}$. Then $R$ is
  • reflexive but not symmetric
  • B
    reflexive but not transitive
  • C
    symmetric and transitive
  • D
    neither symmetric nor transitive

Answer

Correct option: A.
reflexive but not symmetric
(a) : $(1,1),(2,2),(3,3) \in R$
$\therefore \quad R$ is reflexive but it is not symmetric.
Also, $R$ is transitive.

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 radius of the base of a cone is increasing at the rate of $3\ cm/$ minute and the altitude is decreasing at the rate of $4\ cm/$ minute. The rate of change of lateral surface when the radius $= 7\ cm$ and altitude $24\ cm$ is :
Write the function in the simplest form: $\tan ^{-1}\left(\frac{1}{\sqrt{x^{2}-1}}\right),|x|>1$
Let $\text{A}=\{\text{x}:-1\leq\text{x}\leq1\}$ and $f: A \rightarrow A$ such that $\text{f(x)}=\text{x}|\text{x}|,$ then $f$ is:
Choose the correct answer in the following : The area of the circle $x^2 + y^2 = 16$ exterior to the parabola $y^2 = 6x$ is:
The area of the smaller region bounded by the ellipse $\frac{\text{x}^2}{9}+\frac{\text{y}^2}{4}=1$ and the line $\frac{\text{x}}{3}+\frac{\text{y}}{2}=1$ is:
A person travels 12km in the southward direction and then travels 5km to the right and then travels 15km toward the right and finally travels 5km towards the east, how far is he from his starting place?
The distance of the line $\vec{\text{r}}=2\hat{\text{i}}-2\hat{\text{j}}+3\hat{\text{k}}+\lambda(\hat{\text{i}}-\hat{\text{j}}+4\hat{\text{k}})$ from the plane $\vec{\text{r}}.(\hat{\text{i}}+5\hat{\text{j}}+\hat{\text{k}})=5$ is:
The general solution of the differential equation ${e^y}\frac{{dy}}{{dx}} + ({e^y} + 1)\cot x = 0$ is
The solution of the differential equation $ydx - \left( {x + 2{y^2}} \right)dy = 0$ is $x\, = f(y)$. If $f(-1)\, = 1$, then $f(1)$ is equal to
If the area bounded by the curve $2 x^2+y^2=2$ is $A$. Then which of the following is the value of $A$ ?