A box contains 4 orange 3 red and 2 green balls Three balls are drawn at random Find out the number ...........

Quantitative Aptitude ( CCS) Permutation & Combination

A box contains 4 orange, 3 red and 2 green balls. Three balls are drawn at random. Find out the number of ways of selecting the balls of different colours ?

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Explanation:

1 orange ball can be selected in 4C1 ways
1 red ball can be selected in 3C1 ways
1 green ball can be selected in 2C1 ways
Total number of ways
= 4C1 x 3C1 x 2C1
= 4 x 3 x 2
= 24