Show that relation R in set {1,2,3} given by R ={(1,1),,(2,2), (3,3) , (1,2) , (2,3)} is reflexive b

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1.Relation and Function

easy

Show that the relation $R$ in the set $\{1,2,3\}$ given by $R =\{(1,1),\,(2,2),$ $(3,3)$, $(1,2)$, $(2,3)\}$ is reflexive but neither symmetric nor transitive.

Option A

Option B

Option C

Option D

Solution

$R$ is reflexive, since $(1,1),\,(2,2)$ and $(3,3)$ lie in $R$. Also, $R$ is not symmetric, as $(1,2)$ $\in R$ but $(2,1)$ $\notin R$. Similarly, $R$ is not transitive, as $(1,2)$ $\in R$ and $(2,3)$ $\in R$ but $(1,3)$ $\notin R$.

Standard 12

Mathematics

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easy

Show that the relation $R$ in the set $\{1,2,3\}$ given by $R =\{(1,1),\,(2,2),$ $(3,3)$, $(1,2)$, $(2,3)\}$ is reflexive but neither symmetric nor transitive.

Solution

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