Question: Minimum Articles required for a good rank

What would be the minimum amount of articles required for a 10 page min site? I know the more the better but some topics dont have a lot of articles out there.

 

I think that if you cannot find enough keywords, you are doing your keyword research wrong.  Every single topic I have researched using the techniques used in my Niche within a Niche report has turned up 100s of related profitable keywords. 

However, to answer your question, the more competitive your main keywords are, the more articles I recommend.  This needs to be judged case by case  - there are no hard and fast rules.