If  is the sample space for an experiment  and A, , how is Pr(A ΔB) related to Pr(A), Pr(B...

If  is the sample space for an experiment  and A, , how is Pr(A ΔB) related to Pr(A), Pr(B), and Pr(A ∩ B)? [Note: Pr(A Δ B) is the probability that exactly one of the events A, B occurs.]