If `A={a,b,c}` then the relation `R={(a,b),(b,a)} is:`
(a)Reflexive
(b) Symmetric
(c) Transitive
(d) None of these

If A={a,b,c,d}, then a relation R={(a,b),(b,a),(a,a)} on A is

If R and R' are symmetric relations (not disjoint) on a set A ,then the relation R uu R' is (i) Reflexive (ii) Symmetric (ii) Transitive (iv) none of these

Let A = {1,2,3} and R be a relation on A defind as R = {(1,2), (2,3),(1,3)} , then R is (a) reflexive (b) symmetric (c) transtive (d) none of these

6.In the set A={1,2,3,4,5), a relation R is defined by R={(x,y):x, ye Aand rlty }. Then R is (a) reflexive (b) symmetric (c) transitive (d) none of these

In the set A={1,2,3,4} ,relation R={(1,3),(3,1)} is (a) Equivalence (b) Reflexive (c) Symmetric (d) Transitive

Let A={2,4,6,8} and define R={(2,4),(4,2),(4,6),(6,4)}, then R is (a) reflexive (b) symmetric (c) transitive (d) anti-symmetric

Let L denote the set of all straight lines in a plane. Let a relation R be defined by l\ R\ m if and only if l is perpendicular to m for all , l ,\ m in L . Then, R is (a) reflexive (b) symmetric (c) transitive (d) none of these

If R be a relation in a set A and (x, y) in R rArr(y, x) in R AA x, y in A then the relation R is called (A) reflexive (B) symmetric (C) transitive (D) equivalence

If A={a ,\ b ,\ c ,\ d}, then a relation R={(a ,\ b),\ (b ,\ a),\ (a ,\ a)} on A is (a)symmetric and transitive only (b)reflexive and transitive only (c) symmetric only (d) transitive only

R={(x y) ): x is brother of y} the relation R is : (A) Symmetric (b) transitive (c) both of these (d) none of these