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