alleryLet A = {1, 2, 3} and B = {3, 4}. Find n(A × B):
A3
B6
C9
D5
Answer & Solution
Correct answer: B. 6
n(A × B) = n(A) × n(B) = 3 × 2 = 6. The pairs are (1,3),(1,4),(2,3),(2,4),(3,3),(3,4).
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