A bag contains 3 red,5 yellow and 4 green balls.Three balls are drawn randomly.What is theprobability that balls drawn contain exactly 2 green balls?
- 34/45
- 45/75
- 12/55
- 24/68
- Explanation:
Total probability=12C3=220
Exactly 2 green balls can be selected from 4 green balls in 4C2 ways and rest one ball can be
selected from the remaining in 12-4=8 ways
4C2*8=48
Probability=48/220=12/55