A bag contains 2 red, 3green, 2blue balls. two balls are drawn at random. what is probability that none of balls drawn is blue
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Total Balls = 2 + 3 + 2 = 7
Two Balls can be selected from 7 balls in 7C2 = 21 ways.
We want to find out the number of ways in which no blue hole is selected
Both the Balls Are selected from Red Green set of 5 balls.
2 balls can be selected from The Red- Green set in 5C2 = 10 Ways.
Required probability = 10 Upon 21.
Two Balls can be selected from 7 balls in 7C2 = 21 ways.
We want to find out the number of ways in which no blue hole is selected
Both the Balls Are selected from Red Green set of 5 balls.
2 balls can be selected from The Red- Green set in 5C2 = 10 Ways.
Required probability = 10 Upon 21.
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