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Let A and B be two finite sets such that...

Let A and B be two finite sets such that n(A) =85, n(B) = 65and n(A ∪ B) = 135, find n(A ∩ B)?

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Knowledge Check

  • Let A and B be two sets such that n(A)= 70, n(B)=60 and n(A uu B) = 110. Then n(A nn B) is equal to

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    B
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    C
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    D
    200

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