Last updated at May 25, 2021 by Teachoo

Transcript

Example 4 In a school, there are 1000 students, out of which 430 are girls. It is known that out of 430, 10% of the girls study in class XII. What is the probability that a student chosen randomly studies in Class XII given that the chosen student is a girl? Total number of students = 1000 Total number of girls = 430 Girls studying in class XII = 10% of 430 = 10100 ×430 = 43 We need to find the Probability that a student chosen randomly studies in class XII, given that the chosen student is a girl E : student is in class XII F : student is a girl We need to find P(E|F) Now, P(E|F) = 𝑃 𝐸 ∩ 𝐹𝑃(𝐹) = 𝑵𝒖𝒎𝒃𝒆𝒓 𝒐𝒇 𝒈𝒊𝒓𝒍𝒔 𝒔𝒕𝒖𝒅𝒚𝒊𝒏𝒈 𝒊𝒏 𝑪𝒍𝒂𝒔𝒔 𝑿𝑰𝑰 𝑵𝒖𝒎𝒃𝒆𝒓 𝒐𝒇 𝒈𝒊𝒓𝒍𝒔 = 43430 = 110 = 0.1

Examples

Example 1

Example 2

Example 3

Example 4 You are here

Example 5 Important

Example 6

Example 7 Important

Example 8

Example 9 Important

Example 10

Example 11 Important

Example 12 Important

Example 13 Important

Example 14 Important

Example 15 Important

Example 16

Example 17 Important

Example 18 Important

Example 19 Important

Example 20 Important

Example 21 Important

Example 22

Example 23

Example 24 Important

Example 25 Important

Example 26 Important

Example 27 Deleted for CBSE Board 2022 Exams

Example 28 Important Deleted for CBSE Board 2022 Exams

Example 29 Important Deleted for CBSE Board 2022 Exams

Example 30 Important Deleted for CBSE Board 2022 Exams

Example 31 Important Deleted for CBSE Board 2022 Exams

Example 32 Important Deleted for CBSE Board 2022 Exams

Example 33 Important

Example 34 Deleted for CBSE Board 2022 Exams

Example 35 Deleted for CBSE Board 2022 Exams

Example 36 Important

Example 37 Important

Chapter 13 Class 12 Probability (Term 2)

Serial order wise

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.