Question

Which of the following is true for A U (BU1) ? 1) AB 2) AUB 3) A 4) B Which of the following is a true relation between Aand (A,,2) answer me
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Answer 1

Answer:

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Step-by-step explanation:

Solution: Option (3) P(A)+P(B) = 2P(A)P(B/A)

We know that P(AUB) = P(A)+ P(B) – P(A∩B)

As, P(AUB) = P(A∩B),

P(A∩B) = P(A)+ P(B) – P(A∩B)

2P(A∩B) = P(A) + P(B)

2 P(A) . [P(A∩B)/P(A)] = P(A) + P(B)

2P(A). P(B/A) = P(A) + P(B).