Last updated at Dec. 8, 2016 by Teachoo

Transcript

Ex15.1, 8 A bag contains 3 red balls and 5 black balls. A ball is drawn at random from the bag. What is the probability that the ball drawn is (i) red? Total number of balls in the bag = 5 + 3 = 8 Number of red balls = 3 Probability of getting a red ball = (๐๐ข๐๐๐๐ ๐๐ ๐๐๐ ๐๐๐๐๐ )/(๐๐๐ก๐๐ ๐๐ข๐๐๐๐ ๐๐ ๐๐๐๐๐ ) = 3/8 Ex15.1, 8 A bag contains 3 red balls and 5 black balls. A ball is drawn at random from the bag. What is the probability that the ball drawn is (ii) not red? Total number of balls in the bag = 8 Probability of not getting a red ball = Probability of getting blackballs = (๐๐ข๐๐๐๐ ๐๐๐๐๐๐๐ ๐๐๐๐๐ )/(๐๐๐ก๐๐ ๐๐ข๐๐๐๐ ๐๐ ๐๐๐๐๐ ) = 5/8 Method 2 Probability of not getting red ball = 1 โ Probability of getting a red ball = 1 โ 3/8 = 5/8

Ex 15.1

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Ex 15.1, 4 Important

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Ex 15.1, 6 Important

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Ex 15.1, 8 You are here

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Ex 15.1, 10

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Ex 15.1, 15 Important

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Ex 15.1, 19 Important

Ex 15.1, 20* (Optional)

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Ex 15.1, 24 Important

Ex 15.1, 25 Important

Chapter 15 Class 10 Probability

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About the Author

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.