Probability of an event E + Probability of the event ‘not E’
Which of the following cannot be the probability of an event?
The probability of an event that is certain to happen is
The event that is sure to happen is called a certain event and probability of such an event is 1 as this event is bound to happen.
The probability of an event that cannot happen is
A bag contains 3 red balls and 5 black balls. A ball is drawn at random from the bag. What is the probability that the ball drawn is
(ii) not red?