Total of 2 interviews held on campus. One interview was just a long conversation about "why consulting" and business questions that I had asked myself over time. The other was a case. The case was very straightforward and dealt with high level stuff. No math. Nothing out of the ordinary. That being said, my understanding is that it's totally up to your interviewer what kind of interview they give you.. so I don't know do what extent mine can be defined as normal.