Which course shall I pursue in graduation for doing MBA in future?

Hello Pragya! There is no specific degree which you need to pursue to get admission into any B-school (IIM-A in this case). So you can do anything among engineering, arts, science, commerce, humanities, management courses as per your interests. Though my personal suggestion would be BBA/BMS, as it

For MBA, the eligibility is graduation in any stream with 50% marks, so there is not a problem of the stream but hard work required to crack the CAT for this, a strong hold on maths, reasoning, general aptitude and English is required.