Ex 14.1

Chapter 14 Class 11 Probability
Serial order wise

### Transcript

Ex 14.1, 2 A die is thrown. Describe the following events: A: a number less than 7 If the die is thrown, possible outcomes are 1, 2, 3, 4, 5 ,6 S = {1, 2, 3, 4, 5, 6}. A : a number less then 7 A = {1, 2, 3, 4, 5, 6} Ex16.2, 2 (ii) B: a number greater than 7 S = {1, 2, 3, 4, 5, 6} There is no number greater than 7 Hence B = Ex16.2, 2 (iii) C: a multiple of 3 S = {1, 2, 3, 4, 5, 6} C : a multiple of 3 Possible multiple of 3 is 3, 6 Hence, C = {3, 6} Ex16.2, 2 (iv) D: a number less than 4 S = {1, 2, 3, 4, 5, 6} D : a number less than 4 Numbers less than 4 is 1, 2, 3 Hence D = {1, 2, 3} Ex16.2, 2 (v) E: an even number greater than 4 S = {1, 2, 3, 4, 5, 6} E : an even number greater than 4 Even numbers greater than 4 is only 6 Hence E = {6} Ex16.2, 2 (vi) F: a number not less than 3 S = {1, 2, 3, 4, 5, 6} F : a number not less than 3 Numbers not less than 3 are 3, 4, 5 & 6 Hence F = {3, 4, 5, 6} Ex16.2,2 Also find A B, A B, B C, E F, D E, A C, D E, E F , F A B A = {1, 2, 3, 4, 5, 6} B = A B = {1, 2, 3, 4, 5, 6} = {1, 2, 3, 4, 5, 6} A B A = {1, 2, 3, 4, 5, 6} B = A B = {1, 2, 3, 4, 5, 6} = D E D = {1, 2, 3} E = {6} D E = {1, 2, 3} {6} = A C A = {1, 2, 3, 4, 5, 6} C = {3, 6} A C = {1, 2, 3, 4, 5, 6} - {3, 6} = {1, 2, 4, 5} E F E = {6} F = {1, 2} E F = {6} {1, 2} =

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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.