Hello Dear,
Every student remains perplexed and face difficulties in choosing the right career option after 10+2.
Here,I will be telling you about the courses that you can pursue after 12th Commerce with Maths :

• Bachelors in Commerce (B.Com) : It is an undergraduate course that is for 3 years .B.Com degree teaches you the fundamentals of commerce and its related subjects.

• Chartered Accountant : Completion of Chartered Accountancy usually takes five years whereas the student can pursue while doing their bachelors. They have three stages:

• 1. CA Foundation

• 2. CA Intermediate
  

• 3. CA Final

After completion of which they will be able to practice with an accounting firm or in a company.

• Company Secretary : It is a financially rewarding job and the main work of a CS is to look after the administration of the company.

The preparation for the exam starts after +2 itself. The three parts are :

1. Foundational Program

2.Executive Program

3.Professional Program

• Bachelors in Business Administration (BBA) :

A basic introduction about the operation and functions of a firm is imparted to the students.After BBA one can go for MBA in any of the specialisations that interest them.

• Integrated Corporate Law : Integrated courses such as B.Com + LLB(Bachelor of Law) allow you to get two degrees together.The combined course for Law lasts for 5 years.For this you have to seat for Common Law Admission Test (CLAT) .

• Bachelors of Economics : You can learn wide range of topics ranging from international trade to government policies.The top colleges accept the candidates who have secured high marks in their 10+2 board exam.

• Hospitality Diploma Courses :If you are interested in pursuing a career in hospitality and tourism sector this course is for you.You are required to score the cutoff marks in the entrance exam National Council for Hotel Management Joint Entrance Exam (NCHMCT - JEE).

• Journalism and Mass Communication : If you are good at writing and can commute for telling peoples stories to the world then this course is for you.There is no entrance exam for it ,but you have to get good marks in your board exams.

• Bachelors of Arts in Statistics : As a commerce with maths student,you can pursue a degree in statistics.It requires a good command in problem solving and analysis skills.The course last for 3 years.The Indian Statistical Institute (ISI) holds an admission exam every year and is one of the countrys toughest admission exams.But with hardwork it can be easier.

It's always good to learn about different career options and make a decision according to your interests.

Hope it Helps
All the best for your future !!!!