Let A and B be two sets such that n A - 5- n A - B - 9- n A- B - 2- find n B-

Given, n(A)=5, n(A∪ B)=9, n(A∩ B)=2 We need to find n(B) We know n(A∪ B) = a(A) + n(B) n(A∩ B) ⇒ #160;9 = 5 + n(B) 2 ⇒ #160;n( ...

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Cardinality of Sets

Let A and ...

Question

Let $A$ and $B$ be two sets such that $n (A) = 5, n (A \cup B) = 9, n (A \cap B) = 2$ , find $n (B)$ .

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Let A and B be two non empty sets such that $n (A) = 5, n (B) = 6$ and $n (A \cap B) = 3$ .

Find (i) $n (A \times B)$ ,

(ii) $n (B \times A)$ and

(iii) $n (A \times B) \cap (B \times A)$

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