A teacher can easily reorder the order numbers of the quizzes in a classwork. The teacher chooses the seeds, for example 120+..., and rearranges the questions (for example 15: ABCDE FGHIL MNOPQ) for his 30 pupils with the following commands:

The teacher can get the original numbering of the questions with the "decode" command:

As seen in the first example, the teacher can "number" the questions also using digits or lower case letters.

If the questions are closed-ended, with e.g. with 4 and 5 answers, the teacher can reorder the possible answers:


. . .