ICSE Class X Math 2015 Solved Paper

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A bag contains 5 white balls, 6 red balls and 9 green balls. A ball is drawn at random from the bag. Find the probability that the ball drawn is :
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Question : 33
Total: 52
a green ball.
Solution:  
White
5
Red
6
Green
9

Total no. of balls =5+6+9=20
Probability =
favourable cases
Total cases

P( Green )=
9
20
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