Question

If P(A) = 0.7, P(B) = 0.6, and P(A or B) = 0.8, find P(A and B).P(A and B) = _____If P(A) = 0.3, P(B) = 0.6, and P(A and B) = 0.2, find P(A or B).P(A or B) = ______

Answer 1

So,

First remember that:

In the first question, we're given that:

And, in the second part, we're asked to find P(A or B), which is: