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 not green.

Answer 1

Total number of balls = 15

Number of balls which are not green = 4 + 5 + 2 = 11

∴  P(getting a ball which is not green) =`"Number of  favourable outcomes "/"Number of all possible outcome"= 11/15`

Thus, the probability of getting a ball which is not green is`11/150.`