Amazon Software Development Engineer I Intern interview questions

I was called by an HR person to come and take a technical test. After a week or so, they told me they were interested and they wanted me to go through some in-house interviews, two technical and one with the HR. The HR interview was you're regular interview with lots of question about situations you may find yourself at work. Regarding the technical ones, I had one were the subject was centered around POO concepts (design a game or so with various design patterns) and another one based on algorithmics. This last one was the most difficult and entertaining one(Example question: How do you model a dice with each face having a different chance of pointing up after one roll? )