Amazon Area Manager interview questions

I think I got off really well with the process. I submitted a general resume through my college career website. A few days later received an email (littered with spelling mistakes) saying they were impressed with my resume and asked a few screening questions (am I allowed to work in US, willing to work nights and weekends, willing to relocate) and available interview times for the next week. I traveled to an office and in which I completed a math problem and had 2 45 minute interviews. One was with an HR person who asked "Why Amazon?" and 3 or 4 STAR questions, then with an Operations Manager who gave a revision to the math problem, asked 2 situational case questions, and one STAR question. I absolutely BOMBED the math question; they say it is not about getting the correct answer, it's about how you think and reason, but I was not prepared or the problem or good at math and essentially stared at the numbers and asked the manager to walk me though it. I heard back from them the next business day informing me I got the position.