Hello if i got website: www.web-site.com and i buy 5backlinks from all websites got pr3 www.1.website.com www.2.website.com www.3.website.com www.4.website.com www.5.website.com all websites got pr3 i get 1 backlink or 5 ?
do you know if i wona create 5 subdomens and get other pageranks and if i wona backlinks working i need one hosting or 5 hostings ?
I dont really understand your question what i can tell is it doesnt matter one host or five host, to get PR, you just need PR juice point to the page (homepage or subpage)
It all depends if google knows the site is selling links, if the sites has more than 20 outbound links, etc
5 backlinks but what is the use as you also have to optimize all those 5 pages to make your link powerful