Exciting news: I’ve created a new program which randomly generates music theory/rudiments worksheets and corresponding answer keys. I’ve been working on this a few months and I’ve got most of the bugs worked out.
To use the program itself you need to download the source and you have to have Python3 and lilypond installed on linux.
The code can be found here:
https://github.com/eugenecormier/rudi

If you don’t want to do it the ‘hard’ way, a former guitar student of mine is creating a web interface, you just go to the website, click the options you want and poof! you get two pdfs to print off and use.
Justin’s website can be found here:
http://rudiapp.com/

Of course all the code is free to use, change… basically do whatever you want with… I wrote this to help my life out at university, now I give it away freely to whoever else wants it (my thanks to the open source community, Python, and of course Lilypond)