Then number of equivalence relations containing (1, 2) is
(A) 1
(B) 2
(C) 3
(D) 4
Summary
In this chapter, we studied different types of relations and equivalence relation,
composition of functions, invertible functions and binary operations The main features
of this chapter are as follows:
®
Empty relation is the relation R in X given by R = φ ⊂ X × X ®
Universal relation is the relation R in X given by R = X × X ®
Reflexive relation R in X is a relation with (a, a) ∈ R ∀ a ∈ X