Question: (b) LetR2 be a relation on the set A = {1, 2, 3, 6, 9}, where for a, b E A, aRb if and only

(b) LetR2 be a relation on the set A = {1, 2, 3, 6, 9}, where for a, b E A, aRb if and only if a + b is a factor of 48. (i) Draw the digraph associated with R2. [2] (ii) Using the features of the digraph, or otherwise, explain clearly whether R2 is reflexive, symmetric or transitive. (iii) Show that R2 is not reflexive on N. [1]

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