Ex 4.2

Chapter 4 Class 8 Data Handling
Serial order wise

### Transcript

Ex 4.2, 6 Find the probabilities of the events given in Question 2. Question 2 is When a die is thrown, list the outcomes of an event of getting (i) (a) a prime number (b) not a prime number. Total number of outcomes = 6 (i) (a) Number of outcomes of getting a prime number = 3 Probability = (๐๐ข๐๐๐๐ ๐๐ ๐๐ข๐ก๐๐๐๐๐  ๐๐ ๐๐๐ก๐ก๐๐๐ ๐ ๐๐๐๐๐ ๐๐ข๐๐๐๐)/(๐๐๐ก๐๐ ๐๐ข๐๐๐๐ ๐๐ ๐๐ข๐ก๐๐๐๐๐ ) = 3/6=1/2 (b) Number of outcomes of getting not a prime number = 3 Probability = (๐๐ข๐๐๐๐ ๐๐ ๐๐ข๐ก๐๐๐๐๐  ๐๐ ๐๐๐ก ๐๐๐ก๐ก๐๐๐ ๐ ๐๐๐๐๐ ๐๐ข๐๐๐๐)/(๐๐๐ก๐๐ ๐๐ข๐๐๐๐ ๐๐ ๐๐ข๐ก๐๐๐๐๐ ) = 3/6=๐/๐ Ex 4.2, 6 Find the probabilities of the events given in Question 2. Question 2 is When a die is thrown, list the outcomes of an event of getting (ii) (a) a number greater than 5 (b) a number not greater than 5.(ii) (a) Number of outcomes of getting a number greater than 5 = 1 Probability = (๐๐ข๐๐๐๐ ๐๐ ๐๐ข๐ก๐๐๐๐๐  ๐๐ ๐๐๐ก๐ก๐๐๐ ๐ ๐๐ข๐๐๐๐ ๐๐๐๐๐ก๐๐ ๐กโ๐๐ 5)/(๐๐๐ก๐๐ ๐๐ข๐๐๐๐ ๐๐ ๐๐ข๐ก๐๐๐๐๐ ) = ๐/๐ (b) Number of outcomes of getting not a greater than 5 = 5 Probability = (๐๐ข๐๐๐๐ ๐๐ ๐๐ข๐ก๐๐๐๐๐  ๐๐ ๐ ๐๐๐ก๐ก๐๐๐ ๐ ๐๐ข๐๐๐๐ ๐๐๐ก ๐๐๐๐๐ก๐๐ 5)/(๐๐๐ก๐๐ ๐๐ข๐๐๐๐ ๐๐ ๐๐ข๐ก๐๐๐๐๐ ) = ๐/๐

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#### Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.