Engineering
Mathematics
Conditional Probability
Question
Let A and B be two sets such that n(A) = 70, n(B) = 90 and n(A ⋃ B) = 110. Then n(A ⋂ B) equals
Know your College Admission Chances Based on your Rank/Percentile, Category and Home State.
Get your JEE Main Personalised Report with Top Predicted Colleges in JoSA
Solution
n(A ⋃ B) + n(A) + n(B) – n(A ⋂ B)
110 = 70 + 60 – n(A ⋂ B)
⇒ n(A ⋂ B) = 20
Please subscribe our Youtube channel to unlock this solution.