B.Sc Mathematics

Yes, we can say this because geology has a better scope ahead in future. So, you can do B.Sc in Geology.
Good luck.

As the college has not disclosed the fee. I request you to contact the college officials on the contact numbers mentioned in the link:
http://www.mountcarmelcollegeblr.co.in/

Candidate must have secured minimum 55% aggregate in Mathematics. Aggregate in Mathematics, one language and two best electives would be considered best four subjects (BFS).
Environmental Education (ISC), Fine Arts, Graphic Design, Painting, Dance, Music, Physical Education, Home Science, Engineering Drawing and all other vocational subjects are not considered as BFS.

What do you want to do now? Your question isn't clear.

Yes, you can take admission.

Hello Manasa, Why not? Most of my friends were Maths background graduates and working in CTS, Infosys, Genpact, Honeywell. If you're pursuing software courses like python, C+, Java,. NET. Then you can have fair chances. All the Best for your future.

Here are the combinations:
Maths + physics + chemistry
Maths + Defense studies + physics
Maths + chemistry + computer science
Maths + physics + geography
Maths + geography + chemistry

Yes, you are eligible for M.Sc. Many universities offer this course. One of the finest universities of India, Delhi University, also offers this course. Admission for this course is based on the entrance exam. IIT also offers the post graduation programme M.Sc Maths. So be prepared for the entrance exam. But some colleges also offer this course on the basis of your marks in B.Sc Maths.

Eligibility for M.Sc in Astronomy:
*The minimum eligibility required to be met for admission to the course is B.Sc or an equivalent degree with a minimum aggregate score of 50%.
*A few universities and colleges in India conduct entrance examinations for admission to the course.
Good luck.