if this is referring to the most points on 1 ticket, it is actually 22 (Seattle to New York). Might want to change that as well.
Also not sure what you mean by "least train tracks to one city?" If this means like just going from one city to the next, then this answer would be 1 (Seattle to Vancouver, Seattle to Portland, etc.).
If this is referring to least amount of the minimum train tracks on a destination card, if this is referring to the least possible number of train tracks (if you aren't blocked) that you can obtain a destination card going from one city to the next, then it would be 2 (Denver to El Paso).
Also not sure what you mean by "least train tracks to one city?" If this means like just going from one city to the next, then this answer would be 1 (Seattle to Vancouver, Seattle to Portland, etc.).
If this is referring to least amount of the minimum train tracks on a destination card, if this is referring to the least possible number of train tracks (if you aren't blocked) that you can obtain a destination card going from one city to the next, then it would be 2 (Denver to El Paso).