This article explains how to create a quiz that utilizes question banks to randomize the questions that are presented to learners.
Click Content and select Quizzes.
Click Create Quiz.
Select Create a Dynamic Quiz.
Add a name for your quiz.
Select how many questions from each question bank category you would like to include. Click Add.
Review your selections and click Save + Close
When you add a Quiz Activity to your course, you will now see your Dynamic Quizzes available in the dropdown. Choose the Dynamic Quiz you would like to use:
Choose whether the questions should be completely randomized or, or should be randomized but still presented grouped in their categories: