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Practice question

Question

A and B are two events such that P(A) = 0.3 and P(A ∪ B) = 0.8. If A and B are independent, then p(B) is

Options

Choose one · Correct answer highlighted

Explanation

The logic is straightforward: we verify 5/7 by full calculation: use standard identity, substitute, simplify step by step to reach 5/7.

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