If A and A - B are void set empty sets and nA - B-50- find the value of nB-

A = ϕ n (A) = 0 A∩B = ϕ n (A∩B)= 0 n (A∪B) = 50 n(A∪B) = n(A) + n(B) – n(A∩B) 50 = 0 + n (B) – 0 n(B) = 50 ...

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Finite and Infinite Sets

If A and A ∩ ...

Question

If A and A $\cap$ B are void set (empty sets) and n(A $\cup$ B) = 50, find the value of n(B).

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If A and B are two sets such that n(A)=27, n(B)=35 and $n (A \cup B) = 50$ , find $n (A \cap B)$ .

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