User blog comment:Asew54321/Candy Crush Saga Trivia Contest - Rules and Round 1/@comment-17897872-20140510051524/@comment-3225604-20140510071230

Solutions:

1. Maybe the fastest who can answer the questions wins? This requires two competitors to be online at the same time. A fair competition also requires same questions.

2. Same as above, you need competitors to be online at the same time, so that the competition is fair. The time and the questions are controlled variables. While the competitors are the only independent variable.

3. In a competition everyone has different level of knowledge, you can't ensure everyone has the same information they know. Like in the exam, you can't ensure everyone have remembered all the information included in the text books or other sources