See this blog, It has only one post. But it show AdSense ads. how can this happen. Can we put ads for a blog like this. Is it OK with AdSense policy. http://greatgreennorth.blogspot.com/2012/03/new-site.html
6 months old criteria is only for the Asian countries. It is also possible to use Adsense ads in a new blog if you got an approved account.
The guy has another blog with 14 posts about his adventures around Asia, so I'm guessing he as either been accepted on 6 month criteria or he has been accepted for the content on the other blog.