If A and B are two finite sets, then n(A) + n(B) is equal to ___________
If A and B are two finite sets, then n(A) + n(B) is equal to ___________
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2 Answers
Since n(A ∪ B) = n (A) + n (B) – n (A ∩ B)
So,
n(A) + n (B) = n (A ∪ B) + n (A ∩ B)
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