Welcome to your interview.
The question is on your right: Identify Biased Coin With Minimal Flips. Take a moment with it first.
Talk your thinking through with me if you like - when you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes). Discussion and graded submissions share your five interviewer interactions, so spend them well.
If you have two coins, one fair and one biased, how do you determine which is which with minimal flips?