Subscribe to our Youtube Channel - https://you.tube/teachoo

Last updated at Feb. 15, 2020 by Teachoo

Transcript

Misc 17 If A and B arAe two events such that P(A) ≠ 0 and P(B|A) = 1, then (A) A ⊂ B (B) B ⊂ A (C) B = φ (D) A = φ Given P(B|A) = 1 i.e. (𝑃(𝐴 ∩ 𝐵))/(𝑃(𝐴))=1 𝑃(𝐴∩𝐵)=𝑃(𝐴) Option A A ⊂ B A∩B=A So, P(A∩B)=P(A) Hence Option A is Correct. Option B B ⊂ A B ∩ A = B So, P(B ∩ A) = P(B) i.e. P(A ∩ B) = P(B) Hence, option B is incorrect. Option C B = φ P(B) = 0 So, P(A) = 1 Since, B = φ ∴ P(A ∩ B) = 0 So, P(A ∩ B) ≠ P(A) Hence option C is Incorrect. Option D A = φ So, "P(A) = 0" But given "P(A) "≠" 0" Hence option D is incorrect . Therefore, Option A is correct

Miscellaneous

Misc 1

Misc 2 Important

Misc 3

Misc 4 Deleted for CBSE Board 2021 Exams only

Misc 5 Important Deleted for CBSE Board 2021 Exams only

Misc 6 Important Deleted for CBSE Board 2021 Exams only

Misc 7 Important

Misc 8 Important

Misc 9 Important Deleted for CBSE Board 2021 Exams only

Misc 10 Important

Misc 11 Important

Misc 12

Misc 13 Important

Misc 14 Important

Misc 15 Important

Misc 16 Important

Misc 17 Important You are here

Misc 18

Misc 19

Chapter 13 Class 12 Probability

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.