Unable to install root on ubuntu 10

ROOT
1

I want to install root to Ubuntu 16.04. As I run the command sudo apt install root-system-bin, it shows

Reading package lists… Done Building dependency tree
Reading state information… Done Package root-system-bin is not available, but is referred to by another package. This may mean that the package is missing, has been obsoleted, or is only available from another source

E: Package ‘root-system-bin’ has no installation candidate

The same error occurs every time I try to install some new package.

_ROOT Version:6.04
Platform:UBUNTU 16.04

2

The ROOT team provides ready-to-use binary distributions for some systems, including “Ubuntu 14 gcc4.8”, “Ubuntu 16 gcc5.4” and “Ubuntu 18 gcc7.3”, which you just need to download and unpack.

BTW. The old Ubuntu “root-system” packages provided a very outdated / obsolete ROOT 5.34/30 only and they were completely removed in Ubuntu 18.04. See also this old post.