Question

If A =(p,q,r)B=(2,3)andC=(a,b) list all the elements of A*B*C
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Answer 1

A = {a, b, p}, B = {2, 3}, C = {p, q, r, s} n (A ∪ C) x B A ∪ C = {a, b, p, q, r, s} (A ∪ C) x B = {a, 2), (a, 3), (b, 2), (b, 3), (p, 2), (p, 3), (q, 2), (q, 3), (r, 2), (r, 3), (s, 2), (s, 3)} n [(A ∪ C) x B] = 12