Question
If A and B are two independent events such that and P(A'∩B)=2/7 and P(A∩B')=1/5, then P(A) is
Joshi sir comment
Let p(A) = x and p(B) = y
we know that p(A∩B) + p(A∩B') = p(A)
and p(A∩B) + p(B∩A') = p(B)
and for independent event p(A∩B) = p(A)p(B)
so on applying all the given conditions relation etween x and y will be
xy + 1/5 = x
xy + 2/7 = y
solve now