Questions like this are given to candidates as intentional curve balls. They are the most asked interview questions for STEM related positions. Most of the time, you won’t be expected to give an accurate answer. The interviewer mainly wants to see how you problem solve and think through unique situations.

These are common among jobs that require creative thinking, so be prepared to show your brain power. If you’re blindsided by one of these questions, do your best to stay calm and formulate a best-guess answer instead of just saying, “I don’t know.”