According to the weather forecast, the probability of rainfall in place A on a certain day is 20%, and the probability of rainfall in place B is 50%. What is the probability that it will rain in both

According to the weather forecast, the probability of rainfall in place A on a certain day is 20%, and the probability of rainfall in place B is 50%. What is the probability that it will rain in both places A and B on this day?

Joint probability: represents the probability that two events will occur at the same time. The joint probability of A and B is expressed as P(AB) or P(A,B), or P(A∩B).

The independence of these two events, so P(AB)= P(A)* P(B), 20%*50%=10%