Question: Explain how Theorem 2.4: for events A and B: P(B) = P(A B)+P(A B) relates to the total probability formula: P(B) = P(A)P(B|A)

Explain how Theorem 2.4: for events A and B: P(B) = P(A ∩ B)+P(A ∩ B) relates to the total probability formula: P(B) = P(A)·P(B|A) + P(A)·P(B|A).

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