This movie is stupid (the real logic failure).
Spoiler alert.
Once the rules for the test have been established, the question is asked: 'Are there any questions?' Those who managed to make it to the end of the movie find out that this is the question the participants are required to answer to pass the exam. The presumably correct answer provided by the winning participant is 'no'. No, there are not any questions.
Wrong.
The question: 'Are there any questions?' makes no reference to the exam. Everything said is to be taken absolutely literally. The actual and obvious answer to this question is: 'yes'. Yes, there are questions in existence (more than one--many, to be accurate).
All the more obnoxious is the impossibly tiny 'Question 1.' printed on the back of each participant's sheet. It doesn't make any sense both within the logic of the exam and the story in the movie. And again, the original question makes no reference to the exam that they are taking (the question is not literally about the exam).