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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
2Thank You