Missing question with random draw from question bank
I have created a 25 question bank. I have set the quiz to randomly draw 20 questions, each with a 5 point value for a pass/fail quiz at end of my course. In Preview the quiz consistently shows fewer questions and counts the missing questions against me. I get to answer 18 or 19 questions and find I have 5 or 10 points deducted from my resulting score. Upon reviewing the quiz, I count only 18 or 19 questions. What am I missing?
I have tested with fewer question from the draw. Quiz works fine at small numbers of questions. At 8 questions I get one dropped question and thus can no longer get a perfect score. Any ideas as to what setting might be causing this?