CBSE 12th

Yes, you can apply for B.Sc Maths. Forms will be out in May.

No, there is no limit, but you should get a decent score.

The eligibility criteria for B.Sc in Maths is that student must have passed in class 12th with Science stream and should have at least 50% marks or 60% marks as per different universities norms.

For engineering courses, Maths is an important subject to get admission. Without Maths as a subject, one cannot get admission for engineering courses. For Diploma courses also Maths is important.

Hi Manjinder,
The question is quite confusing. I failed to understand what you want to study in USA. Well of course, if you want to apply to an undergraduate course, your class 12th performance is the main requirement. Your percentile in class 10th, class 11th and class 12th will be of critical importance. Even for Masters, they will need your class 12th percentage, but your undergrad percentage will be given more importance. So, yes basically you must qualify and earn the basic credibility to study in USA and all countries abroad.

You should go for B.Sc in Mathematics, or BA in Economics. Best colleges are Delhi University, Mumbai University, and Anna University. For more colleges visit:
https://www.google.co.in/amp/s/www.shiksha.com/science/articles/amp/top-10-bsc-msc-colleges-in-india-blogId-13473.

Please check for your eligibility for admission to Master of Computer Applications [M. CA from the criteria mentioned below:
Graduation in any stream is the basic eligibility for MCA. The eligibility for qualifying marks in graduation differs from institute to institute. Most of the institutes require 45 to 50 % aggregate in qualifying exam for taking admission. Reserved categories get some relaxation in aggregate percentage. Apart from this there is another prerequisite for taking admission in MCA degree; one must have studied Mathematics in 10+2 as a compulsory subject. Regards.

Hi, to enroll into an undergraduate programme in USA, an applicant must clear the SAT or ACT. SAT subject tests are required by top ranking universities. You must also excel in extracurricular activities because universities wants to see how a student developed his profile in addition to schoolwork. JEE Mains is not required. Even if you are applying for an engineering course you must take SAT and SAT subject tests or ACT with writing. You must also take the TOEFL. For more information and specific requirements you can check university websites.