A: 5 + (2 if rand(0,1) <= p) + (3 if rand(0,1) <= q)
B: 8 + (2 if rand(0,1) <= r) + (2 if rand(0,1) <= r)
and I want the average of A+B in terms of p, q, and r
I know how to do it with convolution for specific values of p, q, and r (at least I _think_ I've done that right...) but... beyond that I'm stumped