Amazon Operations Manager interview questions

We have three round of interviews. the first round was about general quesitons. for the second the third round, everthing is practical. The first round is a phone interview. and for the others, they are all in person in Seattle. People there are very friendly, but some of the questions are harder than what I expected

Got the interview through my university recruiting process. Had 1st round at the university- 1 interview, and 2nd in Seattle. The one in Seattle had 4 1:1 interviews, all fit no cases or mini cases. 2 interviews were ok, one clearly the interviewer didn't know much about interviewing people, just reading questions from a paper, and the 4th one was a bit aggressive and made my life hard asking follow-up questions about every answer I had.