Ubuntu Release Naming scheme

       For every release of Ubuntu there is a presence funkiest name of code.
Release Naming scheme:
         "Ubuntu X.YY"-is used as the official name of ubuntu release.
                      X-representing the year(minus 2000).
                    YY-representing the month of the release within that year.

Ubuntu first release is 4.10 ie.the release made in 2004 October(4.10)



                  
courtesy:https://wiki.ubuntu.com/DevelopmentCodeNames