1.

A/{a,b,p},B={2,3}, C={p,q,r,s} then,n[(AuC)×B is _____

Answer»

A = {a, b, p}, B = {2, 3}, C = {p, q, r, s}

n(A ∪ C) × B

A ∪ C = {a, b, p, q, r, s}

(A ∪ C) × 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) × B] = 12



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