Find the number of ways of selecting 9 balls from 6 red balls, 5 w | Filo
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Class 11

Math

Algebra

Permutations and Combinations

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Find the number of ways of selecting balls from red balls, white balls and blue balls if each selection consists of balls of each colour.

Solution: There are a total of red balls, white balls, and blue balls. 

balls have to be selected in such a way that each selection consists of balls of each colour.

 Here, 

balls can be selected from red balls in ways.

balls can be selected from white balls in ways.

balls can be selected from blue balls in ways.

Thus, by multiplication principle, required number of ways of selecting balls



                               

                               

                               
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