Question: For any three events A, B, and D, such that Pr(D) > 0, prove that Pr(A B|D) = Pr(A|D) + Pr(B|D) Pr(A

For any three events A, B, and D, such that Pr(D) > 0, prove that Pr(A ∪ B|D) = Pr(A|D) + Pr(B|D) − Pr(A ∩ B|D).

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