Can I pursue MBA from IIMs after doing 3 years in B.Tech?

Sure you can do. A B.Tech degree generally takes 4 years to complete but if you have a very good profile which most of the IIMs look for and you score the required percentile in CAT exam then surely you can study in an IIM.

Hello, Yes, if you see the batch profiles of all the top B-schools they do consist of people having 3-4 (or even more) years of work experience with them. Just score well in the CAT and give your best in the interview rounds (if shortlisted) to fulfill your wish of pursuing MBA from an IIM or any e

A graduation degree is what you need as the eligibility for MBA. After that you should give the CAT examination and clear it with a very high percentile.

Yes, you can do it on scoring high marks in CAT.