Can conditional probabilities be taken for disjoint events?

Answer 1

No, conditional probabilities cannot be calculated for disjoint events. In probability theory, conditional probability refers to the probability of an event occurring given that another event has already occurred. Disjoint events are events that cannot occur together, meaning that if one event occurs, the other cannot occur simultaneously. The conditional probability concept only applies when there is a non-zero probability for both events to occur together.