For example, you might be asked how many dentists are there in Greenland, or how many soccer balls should a manufacturer expect to sell in Chicago. The interviewer is less interested in the actual answer and more interested in how you would arrive at the answer. Therefore you should clearly explain your thinking process as you answer the question. McKinsey has an excellent interactive case for you to work on at their website . The case is presented so that you can ask follow-up questions and receive guidance in structuring the problem.
Consultants can work long hours.
In addition, many consultants travel to and live at the site of the client company, although they generally return home every weekend. You need to be prepared to make these sacrifices if you want to succeed in consulting. Some firms, not all, hire two year analysts. The assumption is that after two or three years you will go back for an MBA or leave the firm. You are generally not guaranteed this option when you are first hired as an analyst and not all firms provide this option.