Question

If n(A U B) = 100, n(A) = 50 , n(B) = 60, find n(A ∩ B).





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Answer 1

Answer:

Step-by-step explanation:

n(A U B) = n(a)+n(b)-n(A ∩ B)

100=50+60-x

x=10

so answer is 10

Answer 2

Answer:

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