Hint 2: Quiz with arrays: Repeating wrong answers

1. Create a boolean array (the size of the number of questions) and initialize all to false.
2. When a question is answered correctly, set that element in the boolean array to true.
3. To find a question that has not been answered correctly:
   1. generate a random integer in the range of questions
   2. while that question has been answered correctly
      1. generate another random integer in the same range
   3. return the random number that allowed the loop to exit