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