My friend has a site with PR of subpage more then that of the main URL. I mean PR of www.example .com is 1 and the PR of www.example.com/page/ is 3. Is this possible? I have never noticed this.
Easily. PR is computed independently of the mainpage factor. Its just common that websites get most of the links onto their mainpages.
It is absolute possible. I had experienced this myself with my 2 sites. However, its PR will remain for a temporarily period and will turn back to where it was, or where it should be later.
Yes it is possible. My main page's PR is PR4 but there are two pages inside my site which has a PR6 . I think it is known as PageRank Distribution.
It is entirely possible... particularly when you have a very good article/content residing on an inner page and people with higher ranked PR sites choose to link to this content... directly! Regards, RightMan
yes it can happen, if you will create more back link and do promotion of inner page than home page then you inner page will be highly ranked then home page.
Yes, it is possible. If you focus to build link to your inner page, then this kind of case might happen
Yes, it is definitely possible as it is called PageRank, but not SiteRank. Every webpage is treated as independent and Google counts inbound links separately.
Such things are normal these days because it is the matter of link juice passed to the links recipients. If for example the majority of backlinks are pointing at your internal pages, their PR could be even more than your main index file but usually it's nothing to worry about because after a while your homepage too would enjoy the effects.
It is possible completely. If the subpage has more high-quality backlinks than your homepage, then it will gain a higher PR than the main page.