Question

If n(A)=10,n(B)=7,n(A intersection B)=5 find n(AUB)

Answer 1

n(A)=10

n(B)=7

n(A intersection B)=5

n(AUB)=n(A)+n(B)+n(A intersection B)

n(AUB)=10+7+5

n(AUB)=22

Answer:n(AUB)=22

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