Conditional probability of event A given that event B has already occurred is represented as the ratio between Pr[A and B] and Pr[B].

Name: Conditional probability of event A given that event B has already occurred is represented as the ratio between Pr[A and B] and Pr[B].
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This is the formula for conditional probability. The probability of event A given that event B has occurred is represented as Pr[A and B] divided by Pr[B].

Conditional Probability of Event a Given That Event B Has