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Let you be the universal containing …

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Let you be the universal containing 700 elements if A and B are subsets of you such that n of a is equal to 200 and of b is equal to 300 n of a intersection b is equal to 110 n of a dash intersection b – is equal to
  • 1 answers

Sia ? 3 years, 6 months ago

Given,  It should be n(A∪B)

n(A)=200   n(B)=300    n(A∩B)=100

Then n(A∪B)=n(A)+n(B)−n(A∩B)

n(A∩B)=200+300−100

= 500−100

= 400 

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