Consider the Venn diagram below. The numbers in the regions of the circle indicate the number of items that belong to that region.

Question

(2 intersecting circles A & B, where A part is 50, B part is 110, and the intersecting part is 40)

Determine:

n(A)
n(B)
P(A)
P(B)
P(A|B)
P(B|A)

How in the world do i input this in my calculator?? I have no idea how to do this....