Find the number of ways of drawing 9 balls from a bag that has 6 red balls, 8 green balls, and 7 blue balls so that 3 balls of every colour are drawn.

Find the number of ways in which 5 red and 4 white balls can be drawn from a bag containing 10 red and 8 white balls.

A bag contains 4 red and 6 black balls A balls is drawn at random from the bag, its colour is observed and this ball along with two addibonal balls of the same colour are returnted to the bag,now ball is drawn then the probabilaty then the drawn ball is red, is

Find the sample space 'S' and the sample points 'n(S)':A ball is drawn from a bag containing 3 red, 3 green and 4 white balls.

Find the probability of getting both red balss, when from a bag containing 5 red and 4 black balls, two balls are drawn without replacement.

The number of ways of distributing 8 identical balls in 3 distinct boxes, so that none of the boxes is empty, is