Hi all,
I’ve solved all variants of 16.1 except two of them (p.305). And I totally have no idea about these two questions. Could you guys give some hints to solve this? The questions are below.

Suppose the final score is (s,s’). Team 1 scored s points and Team 2 scored s’ points. How would you compute the number of distinct scoring sequences which result in this score?

Suppose the final score is (s,s’). How would you compute the maximum number of times the team that leads could have changed?
Thank you