Three balls are drawn at random from collection of 7 white, 12 green and 4 red balls, The probability that each ball is of different colours is……….

Two balls are drawn at random from a bag containing 6 red and 4 green balls, find the probability that both ball are of same colour.

A ball is drawn at random from a box containing 12 white, 16 red and 20 green balls. Determine the probability that the ball drawn is: (iv) red or white.

An urn contains nine balls of which three are red , four are blue and two are green. Three balls are drawn at random without replacement from the urn. The probability that the three balls have different colours is

An urn contains nine balls of which three are red , four are blue and two are green . Three balls are drawn at random without replacement from the urn . The probability that the three balls have different colours is :

A ball is drawn at random from a box containing 12 white, 16 red and 20 green balls. Determine the probability that the ball drawn is: (iii) not green

A ball is drawn at random from a box containing 12 white, 16 red and 20 green balls. Determine the probability that the ball drawn is: (i) white

A ball is drawn at random from a box containing 12 white, 16 red and 20 green balls. Determine the probability that the ball drawn is: (ii) red

IF a ball is drawn at random from a box containing 11 red balls,6 white balls and 9 green balls then, the probability that the ball is not green is