A box contains 4 red, 3 white and 2 blue balls. Three balls are drawn at random. Find out the number of ways of selecting the balls of different colours?
62
48
12
24
Explanation:
1 red ball can be selected in 4C1 ways.
1 white ball can be selected in 3C1 ways.
1 blue ball can be selected in 2C1 ways.
Total number of ways
= 4C1 × 3C1 × 2C1
=4×3×2=24