While either in Study Mode or Answers Only Mode, you may hide questions by selecting the "bomb" icon located at the top right of the question. Once the question is hidden, you will no longer see that question while studying throughout the site.
Navigate to "Home" and select "Hidden Questions" in the right menu. You will see the question, date it was added and an option to unhide specific questions. Find the question and click "unhide".
Starting at your account "Home" page, click "Generate A Test" in the sub menu to the right. Simply name your test and select a topic and the system will randomly select questions from the database to generate your test.
In order to see the results of generated tests, you must answer all the questions in the test. To do this go to "Manage Tests" and click "Take Test". After you have completed the test your results will be displayed.