R is a relation in A. If (a, b) ∈ R and (b, c) ∈ R implies (a, c) ∈R then R is called
Let R be a relation from N to N defined by R = {(a, b): a, b ∈ N and a = b2}. Which of the following is/are true?
(i) (a, a) ∈ R, for all a ∈ N
(ii) (a, b) ∈ R, implies (b, a) ∈ R
(iii) (a, b) ∈ R, (b, c) ∈ R implies (a, c) ∈ R