JEE Main2008MathematicsProbabilityActual
It is given that the events A and B are such that P(A)= 1 4 , P ( A B )= 1 2 and P ( B A )= 2 3 . Then P(B) is
Options
- A1 6
- B1 3
- C2 3
- D1 2
Correct answer
B. 1 3
Step-by-step solution
aligned & P(A B) P(B) = 1 2 , P(A B) P(A) = 2 3 & Hence P(A) P(B) = 3 4 . ( But P(A)=1 / 4) & P(B)= 1 3 . aligned