Class 12-science

You can appear for:
NEET
JEE
IIT
AIEEE
and many more also.

You can do B.Tech from IITs and B.Sc. courses from Delhi University.

According to me, after 12th pursue BBA from a reputed institute. BBA also includes management study material that will help you to find the specialisation in which you have interest, then you can opt for the same in MBA.

Yes, it can cause a problem. To know about accountancy or to make your career in the same, you must opt for:
(a) HSC in science with maths (b) I.Com or you must be a graduate in (a) Science with maths (b) commerce (c) engineering in any of the streams. If possible try to pursue B.Ed, if you want to make your career in teaching, you may prepare for Banks P.O, SSC, UPSC, etc.

Yes, you can go for BBA (logistics management) which gives you a core idea about logistics management. But, always opt for good college like UPES and others.

Hi,
To be a businessman, you don't need any degree yet if your interest is towards IT and business field. You can pursue B.Tech then MBA. If you have pure business background and want to improve your business skills then you can go for BBA and MBA later.

Hello Ashish,
Below mentioned are the courses for mathematics group students:
1. Engineering courses.
2. B.Sc.
3. BCA.
4. B.Arch.
5. B.Pharmacy.
6. BBA.
7. Commercial pilot training.
8. Diploma course in fire safety and technology.
9. Merchant navy related courses.
10. Bachelor of planning.
11. Bachelor of interior design.
12. Teaching and education courses.
13. Pharm.D
14. Management courses.

Hi,
Belonging to a certain stream won't really hinder this aspiration of yours. If you have done your 12th, do your graduation from a recognized university. Prepare for civil service exams. It would be better if you could look for a coaching (HT's & Byju's classes offer this kind of coaching).
Prepare for it with full seriousness.

It depends on your interest. After 12th with maths, you can choose B.Sc or B.Tech in mechanical branch as it is having the best scope.