A box contains 5 different red and 6 different . white balls. In how many ways 6 balls be selected so that are atleast 2 balls of each colour.

A box contains two white balls, three black balls and four balls. In how many ways can three balls be drawn from the box, if atleast one black ball is to be included in the draw ?

Find the number of ways of selecting 9 ball from 6 red balls, 5 white balls and 5 blue balls if each selection consists of 3 balls of each colour.

Find the number of ways of selecting 9 balls from 6 red balls, 5 white balls and 5 blue balls if each selection consists of 3 balls fo each colour.

In how many Ways 6 different balls can be distributed among 4 boxes.

Find the number of groups that can be made from 5 different green balls., 4 different blue balls and 3 different red balls, if at least 1 green and 1 blue ball is to be included.

A box contains 1 red and 3 identical white balls. Two balls are drawn at random in succession without replacement. Write the sample space for this experiment.

A box contains 6 red and 4 white balls . If 3 balls are drawn at random the probability of getting 2 white balls without replacement is ………… .