Amazon Operations Manager interview questions

I networked with some Amazon managers through LinkedIn which was very helpful. They provided an employee referral and I was contacted by a recruiter via e-mail about 2-3 weeks later. After some e-mail "interviews" asking various questions on administrivia, I was scheduled for two formal phone interviews. The recruiter was punctual and professional. A math question was given and some behavioral questions. Use STAR technique as they are looking for specific examples of what you did. Less than a week later, I was notified they wanted to continue with my candidacy and I was scheduled for an on-site interview at the location I was interested in working. Travel arrangements were made (although they waited until the last minute) and flight, mileage, hotel and car rental were all taken care of. On-site was 4.5 hours...FC tour, math question (got 15 min to complete and I only got maybe half of it right), then (4) 45 minute interviews with Sr Ops Mgrs and HR Mgr. They reviewed math problem and changed the variables and had you explain. Also, reviewed writing sample which had to be sent off two days prior on one of two questions. Rest of interview was all behavioral questions. They are BIG on their 14 Leadership Principles which are not just bumper stickers. They are integrated into everything! After all phone and on-site interviews, they left time for my questions...use this time wisely and ask good questions. I was notified less than a week later of their formal offer. Very smooth process but intense interview process.