Question

Multiple Choice Question :

A = {a, b, p}, B = {2, 3}, C = {p, q, r, s} then n[(A ∪ C) × B] is _______

विकल्प

• 8

• 20

• 12

• 16

Answer 1

12

Explanation;

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