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Practice problem

Probability: Inclusion-Exclusion Principle

By Elise Molinaro
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What does ∩\cap represent in the inclusion-exclusion formula? For reference, this formula is

n(A∪B)=n(A)+n(B)−n(A∩B).n(A \cup B) = n(A) + n(B) - n(A \cap B).
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Type a concept, like “slope” or “photosynthesis”.

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