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1. Chapter 15 Class 10 Probability
2. Concept wise
3. Bag/ Box / Piggy bank

Transcript

Example 2 A bag contains a red ball, a blue ball and a yellow ball, all the balls being of the same size. Kritika takes out a ball from the bag without looking into it. What is the probability that she takes out the yellow ball? Total number of balls = 3 Number of balls which are yellow = 1 P(ball taken out yellow) = (๐๐ข๐๐๐๐ ๐๐ ๐๐๐๐๐  ๐คโ๐๐โ ๐๐๐ ๐ฆ๐๐๐๐๐ค)/(๐๐๐ก๐๐ ๐๐ข๐๐๐๐ ๐๐ ๐๐๐๐๐ ) = 1/3 Example 2 A bag contains a red ball, a blue ball and a yellow ball, all the balls being of the same size. Kritika takes out a ball from the bag without looking into it. What is the probability that she takes out the (ii) red ball? Total number of balls = 3 Number of balls which are red = 1 P(ball taken out red) = (๐๐ข๐๐๐๐ ๐๐ ๐๐๐๐๐  ๐คโ๐๐โ ๐๐๐ ๐๐๐)/(๐๐๐ก๐๐ ๐๐ข๐๐๐๐ ๐๐ ๐๐๐๐๐ ) = 1/3 Example 2 A bag contains a red ball, a blue ball and a yellow ball, all the balls being of the same size. Kritika takes out a ball from the bag without looking into it. What is the probability that she takes out the (iii) blue ball? Total number of balls = 3 Number of balls which are blue = 1 P(ball taken out blue) = (๐๐ข๐๐๐๐ ๐๐ ๐๐๐๐๐  ๐คโ๐๐โ ๐๐๐ ๐๐๐ข๐)/(๐๐๐ก๐๐ ๐๐ข๐๐๐๐ ๐๐ ๐๐๐๐๐ ) = 1/3

Bag/ Box / Piggy bank