If `A={1,\ 2,\ 3,\ 4}` define relations on `A` which have properties of being symmetric but neither reflexive nor transitive.

Explanation

The relation on A having properties of being reflexive, transitive, but not symmetric is


`R=\{(1,1),(2,2),(3,3),(4,4),(2,1)\}`

Relation R satisfies reflexivity and transitivity.

`\Rightarrow(1,1),(2,2),(3,3) \in R`

And `(1,1),(2,1) \in R \Rightarrow(1,1) \in R`

However, `(2,1) \in R`, but `(1,2) \notin R`