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Question

If n()=1000, n(A) = 400, n(B) = 500 , n(AB)=100, then n(AB)


A

400

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B

240

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C

300

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D

500

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Solution

The correct option is C

300


n(AB) = n(U)n(AB)
= 1000 - (400+500-100) = 200


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