Morgan Stanley Quantitative Analyst interview questions

It was a academic conference, however, Morgan Stanley was recruiting there. Everyone submitted their resume in the morning, waited for being called in the afternoon based on the competency of their resume. I was called as the last one that day (because I submitted late). Had a one on one technical interview in a conference room. The employer seemed like a senior quant, looked very tired, and had not too much conversation with me. After a very brief self introduction(about twenty seconds), he started to asked me questions. First one was about Brownian motion and reflection theory, the second one was about flipping coins and its probability. I finished the two questions based on his hint. One thing to mention is, the way he solved the problems was really smart.

It was the initial telephone interview. I had a few questions about my CV and why I have chosen some modules and about my dissertation topic. Why do I want to work for Morgan Stanley and why that position. I had a few easy probability questions and some harder ones. The person interviewing was pretty nice.