Question

A bag contains 4 white balls, 5 red balls, 2 black balls and 4 green balls. A ball is drawn at random from the bag. Find the probability that it is neither red nor green.

Answer 1

Total number of balls = 15

Number of balls which are neither red nor green = 4 + 2 = 6

∴  P(getting a ball which is neither red nor green) = `"Number of favourable outcome"/"Number of all possible  outcomes" = 6/15 = 2/5`
                                 = `6/15 = 2/5`

Thus, the probability of getting a ball which is neither red nor green is