Let A and B be two events in a sample space S such that P(A) = .6 and p(B l A) =.5. Find P (A∩B).

Well, I know that that should start off by finding P(A l B)
which is found using the formula P(A∩B)/ P(B) but I am not given P(B) here so I don't know what to do.

3 answers

Or wait.. I might be getting the formulas mixed up. I think I must multiply P(A) by P(B l A) right?

For P(A∩B)?

0.3 that is my final answer.

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