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If $A$ and $B$ are two related events, and $P(A \mid B)$ represents the conditional probability, Bayes’ theorem states that

1. $P(A\mid B) = \dfrac{P(A)}{P(B)} P(B\mid A)$
2. $P(A\mid B) = P(A) P(B) P(B\mid A)$
3. $P(A\mid B) = \dfrac{P(A)}{P(B)}$
4. $P(A\mid B) = P(A)+P(B)$

Bayes’ theorem is stated mathematically as the following equation:

so option A is correct.

### 1 comment

Option A is correct.