Here is how to install the most recent stable version of Mono (version 184.108.40.206_1).
Download the file here:
I downloaded the file to the desktop, and then I opened up the terminal and typed:
That Changed the directory to /home/USERNAME/Desktop. From there I ran:
chmod +x mono-220.127.116.11_1-installer.bin
./mono-18.104.22.168_1-installer.bin –mode xwindow
and then you just click a couple of next’s and ok’s, and then Bob’s your uncle.
If you have any questions please leave them in the comments so that the answers can be helpful to all.