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 of each colour.

The number of ways of selecting 10 balls from unlimited number of red, black, white and green balls, is

Find the number of ways of selections of 3 balls out of 9 red distinct balls and 6 balck distnct balls if at least one balck ball is here in each selection.

The total number of ways of selecting 10 balls out of an unlimited number of identical white, red and blue balls is equal to

A box contains 7 red , 6 white and 4 blue balls. Number of ways of selection of three red balls is

Total number of ways of selecting 10 balls out of unlimited number of white,red,blue and green balls given that balls of each colour are identical,is 11P then value of P is

Find the total number of ways of selection of 4 distinct red balls, 2 identical black balls, and 3 identical white balls.

Find the total number of selections of at least one red ball from 4 red balls and 3green balls, if (a) the balls of the same colour are different, (b) the balls of the same colour are identical.