I’ve had the opportunity to visit IIM Kozhikode, IIM Bangalore and IIM Ahmedabad for various competitions. While at these institutes, I interacted with many students. Some of them were from Economics background, and one had even completed her graduation in Philosophy.
Students from all these backgrounds, including BBS/BMS enjoy the diversity factor. This gives them an upper hand in the selection process over Engineers. But to enjoy this benefit, one must have a good CAT score, and a good academic record.
Prepare well for your CAT, and make sure you have a good academic record. If you fulfill these criteria, you’ll get into IIM Ahmedabad, regardless of your educational background.
Also, make sure to prepare well for the quant section of CAT. This is where the engineering students outdo the candidates from other academic backgrounds.
Yes, there are a significant number of BBA or BMS graduates at IIM Ahmedabad. In fact, people from similar backgrounds can be found not only at IIM Ahmedabad but also at several other IIMs.
However, the truth is that Engineers make up the majority of the batch because they have an advantage in the Quant section of the CAT due to their background. There are people from all walks of life with degrees in the arts, business, and so on. Students from such backgrounds, including BBA, benefit from the diversity factor, which gives them an advantage in the selection process over Engineers if they have good academics and CAT scores. Therefore, you should begin working on improving your CAT scores.