# Probability of winning at craps

hholzer
http://tinyurl.com/2a48rlv at the bottom paragraph
how do they get 1/3 for the probability of winning
for rolling a sum of 4 twice?
(the table mentioned in the paragraph is on the previous page)

I'm not seeing how the P( roll a sum that is 4 | roll a sum that is 4) = 1/3