alleryMatch each set relation with its mathematical formula:
A1-A, 2-B, 3-C
B1-B, 2-A, 3-C
C1-C, 2-B, 3-A
D1-A, 2-C, 3-B
Answer & Solution
Correct answer: A. 1-A, 2-B, 3-C
n(A∪B) = n(A)+n(B)-n(A∩B). Subsets count = 2ⁿ. Complement A' = U - A.
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