If the probability that exactly one of the two events A and B occurs is p and the probability that both A and B occur is q, then -

The probabilities that at least one of the events A and B occurs is 0.8 and the probability that both events occur simultaneously is 0.25. Find the probability P(barA)+P(barB) .

Let A and B two events such that the probability that exactly one of them occurs is 2/5 and the probability that A or B occurs is 1/2 , then probability of both of them occur together is :

Let A and B be two events such that the probability that exactly one of them occurs is 1/5 and the probability that A or B occurs is 1/3 , then the probability of both of them occur together is :

Let A and B be two events such that the probability that exactly one of them occurs is 1/5 and the probability that A or B occurs is 1/3 , then the probability of both of them occur together is :

Let A and B two events such that the probgability that exactly one of them occurs is 2/5 and the probability that A or B occurs is 1/2 , then probability of both of them occur together is :

Show that the probability that exactly one of the events A and B occurs is P(A) + P(B) - 2P(AB).

The probability of the simultaneous occurrence of two events A and B is p. If the probability that exactly one of A, B occurs is q, then which of the following alternatives is incorrect ?

The probability of the simultaneous occurrence of two events A and B is p. If the probability that exactly one of A, B occurs is q, then which of the following alternatives is incorrect ?

A and B are two independent events. If the probability that both A and B occur is 1/20 and the probability that neither of them occurs is 3/5, then P(A)+P(B)=