A relation R on `A={1,2,3}` defined by `R={(1,1),(2,1),(3,3)}` is not symmetric why?

The relation R in the set {1,2,3} given by R = {(1,2), (2,1),(1,1)} is A) symmetric and transitive, but not reflexive B) reflexive and symmetric, but not transitive C) symmetric, but neither reflexive nor transitive D) an equivalence relation

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

Show that the relation R in the set {1, 2, 3} defined as: (a) R={(1,2),(2,1)} is symmetric, but neither reflexive nor transitive (b) R={(1,1),(2,2),(3,3),(1,2),(2,3)} is reflexive, but neither symmetric nor transitive (c ) R={(1,3),(3,2),(1,2)} is transitive, but neither reflexive nor symmetric.

A relation R in A = {1,2,3} is defined as ? {(1,1),(1,2),(2,2),(3,3)}. Which element(s) of relation R be removed to make R an equivalence relation?

A relation R in S = {1, 2, 3} is defined as R = {(1, 1),(2,2),(1,2),(3,3)}. Which of the following elements (s) must be added to make R an equivalence relation ?

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

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

If a relation R on the set {1,2,3} be defined by R={(1,2)}, then R is:

The relation R on the set A = {1, 2, 3} defined as R ={(1, 1), (1, 2), (2, 1), (3, 3)} is reflexive, symmetric and transitive.

A relation R in S = {1, 2, 3} is defined as R {(1, 1), (1, 2), (2, 2), (3, 3)}. Which element of relation R be removed to make R an equivalence relation