If events A and B are general events, neither mutually exclusive nor independent, then P(A and B) = ?
For general events,
P(A and B) =P(A) x P(B|A)
or
P(A and B) =P(B) x P(A|B)
Where P(A|B), the conditional probability of A given B, means that we will pretend that condition B is true and, given that condition, figure out the probability of A.