The events A and B are independent. The probability that event A occurs is m and the probability that event B occurs is n. Which of the following is equal to the probability that exactly one of the events A and B occurs?	Answers:
A) m − 2mn B) n − mn C) m + n − 2mn D) m + n − mn E) m + n
Probability of A occuring = m , Probability of A NOT occuring = 1-m   Probability of B occuring =n , Probability of B not occurring = 1-n   Probability of atleast of one of A and B occuring = 1-(1-m)(1-n) =m+n -mn   m + n − mn
<result>D</result>
The events A and B are independent. The probability that event A occurs is m and the probability that event B occurs is n. Which of the following is equal to the probability that exactly one of the events A and B occurs?