Recall the complement principle: Pr(B) = 1 - Pr(B^1) Prove this generalization: Pr (AnB) = Pr (A) - Pr (AnB^1)
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Recall the complement principle: Pr(B) = 1 - Pr(B^1)
Prove this generalization:
Pr (AnB) = Pr (A) - Pr (AnB^1)
(Note: When A = S, this is the complement rule)
Hint: Use the inclusion exclusion principle: Pr(X) + Pr (Y) - Pr (XnY) = Pr (XuY)
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