Career

The best part of jumping on to the IT bandwagon is: There are always going to be plenty of possibilities for a person whether s/he starts from a diploma level or a full-fledged engineering degree.
To list down explicitly (in order of priority: top-down) for a fresher, here are some of the best technical course options that IT Cos hunt for in India and abroad:
https://www.shiksha.com/it-software/databases/articles/top-10-current-tech-trends-for-it-enthusiasts-blogId-5643

There are very few or no school that offers any additional subject related to robotics, hence you can choose PCM along with any computers subject in class 12th. After class 12th, you can opt for B.Tech/BE in robotics.

I think that B.Sc has an option, where we can take combination of economy and mathematics.

Eligibility:
Since data analytics or data science is an advanced field of information technology and management, the best Diploma and certifications are available at post-graduation level.
In order to pursue the courses mentioned above, you must have pursued your graduation with at least 60% marks (preferably in the IT, statistics field).
Data analysis requires a good amount of knowledge and experience in the field of data mining, hence, you will also be required to have 3 to 4 years of work experience for some of the above courses (especially executive courses).

Hello Gayathri,
You are already 26 years old. You have already changed three streams. If you want to be in automobiles, then surely you need to do some course in that sphere. However, there is one more way. Why don't you start a small business initially to manufacture components required by automobiles companies? This way your dream of making a career in automobiles will also be fulfilled.

Refer to the link below to find out the exams along with the admission procedure:
https://www.shiksha.com/mass-communication-media/exams-st-7

Hi Lakshya,
Some courses you can do after class 12th Science with PCB:
MBBS
BAMS (Ayurvedic)
BHMS (Homoeopathy)
BUMS (Unani)
BDS.
Bachelor of Veterinary Science & Animal Husbandry (B.VSc AH)
Bachelor of Naturopathy & Yogic Science (BNYS)
Bachelor of Physiotherapy.
B.Sc. Dairy Technology
B.Sc. Home Science
Bachelor of Pharmacy
Biotechnology
BOT (Occupational Therapy)
General Nursing
BMLT (Medical Lab Technology)
Paramedical courses
B.Sc.
Good luck.