1.

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

Answer»

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




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