It's equal to 0.7. And because these two things are not the same, because probability of A by itself is different than the probability of A, given that B is true, this tells us that these two events are not independent, that we're dealing with dependent probability. This shows us the fact that B being true has changed the probability of A being true. This tells us that A and B are dependent. Before I start going on my little soapbox about dependent events, let's just think about what they actually want us to figure out. The probability of A given B is equal to 0.7. That's what we wrote right over here.