P(A) = 1/3, P(B) = 2/3; A ও B স্বাধীন হলে P(B | A) = কত?

প্রশ্ন: P(A) = 1/3, P(B) = 2/3; A ও B স্বাধীন হলে P(B | A) = কত?সমাধান:P(A) = 1/3, P(B) = 2/3 P(A ∩ B) = P(A) × P(B)= (1/3) × (2/3)= 2/9∴ P(B | A) = P(A ∩ B)/P(A)= (2/9)/(1/3)= 2/3