(a) Draw up truth tables to represent the statements 

(i) p is equivalent to q 

(ii) p implies q

(b) Using the algebra of statements, represent the truth of the statements below in tabular form and hence determine whether they are true or false:

(i) If p implies q, and r implies q, then either r implies p or p implies r.

(ii) If p is equivalent to q, and q is equivalent to r, then p implies r.