We have two events A and B and three locations X, Y, Z. Each event A and B is carried independently on locations X, Y, Z. The individual probability of events A and B on all three locations is as following.

......X...............Y............. Z
A...(0.25).....(0.40).....(0.15)
B...(0.35).....(0.20).....(0.25)

What is the joint probability of events A and B?
The sum of joint probability of A and B should be 1