Hi,

Please help me on my queries:

1) How much time it take to update page rank and domain authority of website after backlink is crawled by Google?
2) How Google see backlink of blogspot blog with different page rank? Do you think, more backlink from blogspot blogs can advantage?

Fro example:

abc.blogspot.com pr3
xyz.blogspot.com pr2
qaz.blogspot.com pr3

Can anyone guide me?

Thanks