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Question

If n(U)=700,n(A)=200,n(B)=240,n(AB)=100, then n(AB) is equal to

A
260
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B
560
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C
360
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D
600
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Solution

The correct option is D 600
Using De Morgan's law,
n(AB)=n(AB) =n(U)n(AB)=n(U)100 =700100=600

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