CBSE Class 12 Sample Paper for 2021 Boards

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Question 28 (Choice 2) - CBSE Class 12 Sample Paper for 2021 Boards - Solutions of Sample Papers and Past Year Papers - for Class 12 Boards

Last updated at August 10, 2026 by

Given that E and F are events such that P(E) = 0.8, P(F) = 0.7, P (E∩F) = 0.6. Find P (EĢ„ | FĢ„)

 

Given that E and F are events such that P(E) = 0.8, P(F) = 0.7, P(E∩F)

Question 28 (Choice 2) - CBSE Class 12 Sample Paper for 2021 Boards - Part 2

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Question 28 (Choice 2) Given that E and F are events such that P(E) = 0.8, P(F) = 0.7, P (E āˆ© F) = 0.6. Find P(šø Ģ…|ĀÆš¹) Now, š(š‘¬ Ģ…ā”‚ĀÆš‘­)=(š‘ƒ(šø Ģ… āˆ© š¹ Ģ…))/(š‘ƒ(š¹ Ģ…)) =(š‘ƒ(šø āˆŖ š¹)^š¶ )/(1 āˆ’ š‘ƒ(š¹)) =(šŸ āˆ’ š‘·(š‘¬ āˆŖ š‘­))/(šŸ āˆ’ š‘·(š‘­)) Finding š‘·(š‘¬ āˆŖ š‘­) P(E āˆŖ F) = P(E) + P(F) āˆ’ P(E āˆ© F) Putting values P(E āˆŖ F) = 0.8 + 0.7 āˆ’ 0.6 P(E āˆŖ F) = 0.8 + 0.7 āˆ’ 0.6 P(E āˆŖ F) = 0.9 Now, š‘ƒ(šø Ģ…ā”‚ĀÆš¹) =(1 āˆ’ š‘ƒ(šø āˆŖ š¹))/(1 āˆ’ š‘ƒ(š¹)) =(1 āˆ’ 0.9)/(1 āˆ’ 0.7) =0.1/0.3 =šŸ/šŸ‘

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