i have search this question for quite long but i cannot find the answer. may be because i don't know what keyword should i enter.i wonder, which is better to have let say 100 link only one one website that have PR 9 than 1 link on every 100 website PR 9 ?
Link count on high PR website, which is better?
seo;pagerank
Your question is flawed. Websites don't have PR, web pages. PR is per page, not per website. Additionally, chasing PR is a huge waste of time. I'd rather have 100 links on low PR pages that are related to my website and rank well for the terms I want to rank well for, than high PR links from unrelated websites. PR has very little weight in Google's ranking algorithm but links from relevant websites do make a difference and are what you're really looking for.