Let A = {ONGC, BHEL, SAIL, GAIL, IOCL} and R be a relation defined as ''two elements of A are related if they share exactly one letter''. The relation R, is

If A={4, 6, 10, 12} and R is a relation defined on A as ''two elements are related iff they have exactly one common factor other than 1''. Then the relation R is

If A={4, 6, 10, 12} and R is a relation defined on A as ''two elements are related iff they have exactly one common factor other than 1''. Then the relation R is

X is the set of all residents in a colony and R is a relation defined on X as follows: ''Two persons are related iff they speak the same language'' The relation R, is

X is the set of all residents in a colony and R is a relation defined on X as follows: ''Two persons are related iff they speak the same language'' The relation R, is

If relation R defined on set A is an equivalence relation, then R is

Let R be a relation defined as aRb if 1+ab>0 .Then the relation R is (a,b in R)

Let 'R' be the relation defined on the of natural numbers 'N' as , R={(x,y):x+y=6} ,where x, y in N then range of the relation R is

Let A={1,2,3} and R be a relation defined on A, such that, R{(1,2),(2,1)}, then the relation R will be

If relation R is defined as: aRb if ''a is the father of b''. Then, R is

If relation R is defined as: aRb if ''a is the father of b''. Then, R is