Your question is Bayes Theorem Problem. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
State Bayes theorem, then solve a probability problem based on Bayes theorem.
Asked in the Round 1 stage. After CV/internship discussion.
Explain the theorem, identify the prior, likelihood, evidence, and posterior, then show each calculation clearly. The specific probability values and events are supplied during the interview, so do not assume unstated numbers.