There are two ways you can check the build version of SharePoint 2010. First is using Management Shell and the other one using SharePoint 2010 Central Administration
Method 1: Go to SharePoint 2010 management shell and type in
(get-spfarm).buildversion
Method 2: Central Administration | Upgrade and Migration | Check product and path installation status
Hi
just one remark
Can you provide a link with all version numbers for Sharepoint products?
Thanks and regards
Romeo
You can find all SharePoint version numbers by going here: http://www.sharepointdesignerstepbystep.com/blog/SitePages/SharePoint%20versions.aspx