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Question
A and B are two events such that P (A) = 0.54, P (B) = 0.69 and P (A ∩ B) = 0.35. Find
P (A ∪ B).
Solution
Given:
P (A) = 0.54, P (B) = 0.69 and P (A ∩ B) = 0.35
By addition theorem, we have:
P (A ∪ B) = P(A) + P (B) -P (A ∩ B)
= 0.54 + 0.69 - 0.35
= 0.88
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