What is the average package given by IIMs other than IIM (A, B and C) and do other IIMs also guarantee 100% placements?

Hello Shantanil, First, no IIM offers any guarantee of placements. They can only give you a record of the previous years. Of course, it goes without saying that recruiters throng IIMs since they have a good reputation. But do not worry. All IIMs have a good reputation for placements.