If nA - 40- nB - 27 and nA - B - 15- find nA - B

Given, n(A)=40, n(B)=27 and n(A∩ B)=15 Using the formula, n (A ∪ B ) = n(A) + n(B) n(A ∩ B) So, n (A ∪ B ) #160; = 40 + 27 15 =52 ...

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Properties of Set Operation

If nA = 40,...

Question

If $n (A) = 40, n (B) = 27$ and $n (A$ $\cap$ $B) = 15$ ; find $n (A$ $\cup$ $B)$

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