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?
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
A bag contains 6 white and 4 black balls.Two balls are drawn at random.Find the probability that they are of same
color?
