I only take the online assignment and the recruiter interview. Regarding the online assignment I had to complete coding questions on codility. Regarding the recruiter interview, he/she asks multiple question about my projects and background, at the end there was a logic question

Was contacted for an interview on my university's campus. Discussed my research and interests with the interviewer and received a follow-up interview at Microsoft's campus in Washington. Was flown to Seattle with a group of other interviewees. The following day we all were driven to the campus and taken to a conference room where we would be stationed throughout the day while we were called out to conduct four separate interviews. The interviews themselves were not difficult, but only after the first two interviews were any of us even told what department we were interviewing for (Microsoft Office). Since this had nothing to do with my interests or research I was very confused and when questioned, the interview organizer just apologized.