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 :

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 :

If A and B are two events, the probability that exactly one of them occurs is given by

If M and N are any two events,then the probability that exactly one of them occurs is

Given two independent events, if the probability that exactly one of them occurs is 26/49 and the probability that none of them occurs is 15/49 , then the probability of more probable of the two events is :