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If M and N are any two events, the probability that at least one of them occurs is

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If M and N are any two events, the probability that at least one of them occurs is A. P (M) + P (N) – 2 P (M ∩ N) B. P (M) + P (N) – P (M ∩ N) C. P (M) + P (N) + P (M ∩ N) D. P (M) + P (N) + 2P (M ∩ N) Select the correct answer from above options

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Given that M and N are two events, By General Addition Rule, P(A ⋃ B) = P(A) + P (B) – P(A ⋂ B) ∴ P(M ⋃ N) = P(M) + P(N) – P(M ⋂ N). Hence, the correct option is (B).

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