The process took 4 weeks. I interviewed at McKinsey & Company in Jan 2012
Interview
One month after I applied on the internet site, HR contacted me to schedule the first round and emailed me some docs that I found really useful to prepare myself. The first round consisted of a written test followed by a 1:1 interview. The written test was very similar to one that I had received in the email.
Interview questions [1]
Question 1
Why does a haircut cost much more money today than in the sixties?
Passed the online test and then had a round 1 interview. I got a rejection call shortly after. Interviews were a mix of behavioral and technical. Difficulty depends on difficulty of case.
First you get an HR Round, then 2 back to back interviews then 3 interviews. The overall process took around 2-3 weeks, it was not very difficult very fast turnaround
Interview questions [1]
Question 1
PEI, describe a specific scenario and then get asked details
I interviewed at McKinsey & Company (New York, NY)
Interview
Positive experience until the super day. The scheduling was quite long and they gave me a month's gap between my previous round and my final round. But overall everyone speaks eloquently and thinks logically. My interactions with senior partners are also very positive; they ask insightful, probing questions and were encouraging throughout the interview. I thought I smashed it, but one of the partners called me the other day and rejected me.