Home › CBSE Class 11 (Commerce) › Mathematics › Sets, Relations and Functions › Let A = {1, 2, 3}, B = {3, 4}, C = {4, 5, 6}. Ho…
Let A = {1, 2, 3}, B = {3, 4}, C = {4, 5, 6}. How many elements are in A × (B ∪ C)?
A12
B9
C18
D6
Answer & Solution
Correct answer: A. 12
B ∪ C = {3, 4, 5, 6} has 4 elements, so A × (B ∪ C) has 3 times 4 = 12 pairs.
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