Numbering Quiz Questions in Storyline

Thank you all for the great information.  I did do one thing slightly different than Nancy's suggestion which allowed me to not have to use any questions outside of using the Test Bank.  (Just to clarify, my setup is similar to Roger's in that I show the user the instructions before the quiz.)

I simply used a slide trigger to set my initial Page variable to "0" in the top Slide Master layout (for the instructions section).   Then in the lower Slide Master layout (for the Quiz Bank section), I used a slide trigger to set the Page variable to increase by "1".  That way, every question in the quiz bank automatically increased the value by "1" and I didn't have to always use the same initial question.