Meta Data Science interview questions

It was 5 round interview process. All onsite interviews with 5 different data scientist. All interviews were case study based. One round consisted of mathematics case study. All of the others were product analytics related case study.

Recruiter screen > tech screen > 4 tech sessions at remote "onsite", all 30/45 min Tech screen: product sense about metric movement and SQL On-site: intermediate to advanced SQL, some statistics and probability in one session, and one very open ended product sense question about how to find and estimate the impact of fake news. Must have detailed answers for all questions - high level won't pass.