SOLUTION: If n(A) = 40, n(B) = 15, and n(A ∩ B) = 5, find n(A u B).

SOLUTION: If n(A) = 40, n(B) = 15, and n(A ∩ B) = 5, find n(A u B).

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Question 675760: If n(A) = 40, n(B) = 15, and n(A ∩ B) = 5, find n(A u B).

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
If n(A) = 40, n(B) = 15, and n(A ∩ B) = 5, find n(A u B).
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n(AuB) = n(A)+n(B)-n(A and B)
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n(AuB) = 40 + 15 - 5
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n(AuB) = 50
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cheers,
Stan H.
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