Bayes' theorem:
AP(B|A)
BP(A | B) = P(B | A) P(A) / P(B)
CP(A) × P(B)
DP(A|B) = P(B|A)
Answer & Solution
Correct answer: B. P(A | B) = P(B | A) P(A) / P(B)
Bayes: P(A | B) = P(B | A) × P(A) / P(B). Updates probability of A given new evidence B. Used in medical diagnosis, machine learning, science inference.
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