Given the set A- {a, b, c, d} a) If this is the relation R= {(a, b), (b, d)} Show s(R). b) If this is the relation: R= {(a, b), (a, d), (b, c), (d, c)}. Show t(R). c) For that same relation of R = {(a, b), (a, d), (b, c), (d, c)}. Show tr(R).

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