Numlock on by default on Linux Kali

I am fairly new to this version of Linux. I have it set so that when it boots, it automatically boots into the GUI for the operating system. This means when I load up the OS I am greeted with a login screen. My question is how to have it so NumLock is on by default at this point. I have looked at ways of doing it and most the ways involve using NumLockX. I have gone off several forums on how to do it, [here](https://askubuntu.com/a/155683/491642) , [here](https://help.ubuntu.com/community/NumLock) , and [here](http://www.cyberciti.biz/faq/how-to-linux-turn-on-num-lock-on-gnome-startup/) . However they are for Ubuntu and Debian versions of Linux and they proved unsuccessful when I tried them on Kali. Is anyone aware of how to do it on Linux Kali? I would appreciate any help. Dan