Consider X = {1, 2, 3, 4, 5, 6}, and state the relation R on X as
R = {(1, 2), (2, 1), (2, 3), (3, 4), (4, 5), (5, 6)}
i) Compute reflexive closure of R.
ii) Compute symmetric closure of R.
iii) Compute transitive closure of R.
iv) Compute reflexive and transitive closure of R.