What he wants is to run all 3 of his scores at once and have that list randomized. Instead of running them at different times like Id: 1 and then goes to Id: 2 and then back to Id: 1 he wants it to do all of Id: 1 and then go to Id: 2.
It's simple programming, math random, and on top of that, just save it as a string... assuming you're making this yourself in a program, javascript can also do it, and I believe so can php.