Hello aspirant,

First of all good luck for your results, I hope it will be what you are expecting.

Now, yes you can do all these courses together but it will be quite hectic for you. So be ready to completely loose yourself in studies for approximately 5 years because that's what it will take to complete all these courses provided you clear every group in first attempt.

What position do you want in Indian army because every position has different educational qualifications.

Good luck!