Maths Scope

Dear Akshay,
Bachelor of Science (B.Sc) (Hons) in Mathematics provides in-depth knowledge geometry, trigonometry, calculus and various other theories in Mathematics or related discipline such as Computer Science or Statistics. Mathematics Hons course is an important and valuable one that provides opportunities to the students of taking some subjects of Master's deree.
You can get employment in various areas after pursuing B.Sc in Mathematics (Hons) such as Actuarial Sciences, Banks and Investment Firms, Commerce Industry, Financial Sector, Insurance Agencies, Inventory Management, Statistics, Utility Companies, Business and Industry etc.
You can work as Actuary, Accountancy, Personal Banker, Economists, Computer Programmer, Loan Officer, Demographer, Mathematician, Statistician etc.
and answer related to 2 query " yes that will help you to crack the Examination of bank of other government exam because moreover examination having logical reasoning question so in that your mathematical skills will help you .
All the best

Eligibility for Actuarial Science:
1) Should have completed 18 years of age2) Should have attained any one of the following Educational Standards
A) Passed 10+2 (H.S.C) or equivalent with at least 85% in Mathematics Or Statistics.
B) Graduate or Post Graduate with Mathematical subjects.For this purpose following subjects constitute mathematical subjects; • Mathematics or any of its branches • Statistics or any of its sub classifications such as Mathematical Statistics and Applied Statistics • Econometrics • Computer Sciences Any discipline of Engineering Subject in Science such as Physics or its branches.
So, you can even apply for this after your 12th also.
All The Best !