(i) Let R be a relation defined on A{1,2,3} by R = {(13),(3,1),(2,2)} is

(a) Reflexive

(b) Symmetric

(C) Transitive

(d) Reflexive but not transitive.

(ii) Find fog and gof if ƒ(x) = |x+1| and g(x) = 2x – 1

(iii) Let * be a binary operation defined on N x N by (a,b) * (c,d.) = (a + c, b + d)

Find the identity element for * if it exists.