Q&A about the exam (updated: 28/05/2021)

We share the questions that come from students and provide answers here:

Q: About multiple choices in the exam. Is it better to choose nothing in multiple choice questions, if you don't know the answer?

A: If you didn't choose any option, you will get 0 points, but if you choose one, you will have a 25% chance to get at least 1 point. In that case, if you choose the wrong answer, you will still get 0 points. I guess the smartest way is to choose one option that you think is most likely to be correct. You have nothing to lose. But of course, if it is possible, it is best to select all correct answers.