Hi,

If you are referring to BSEB class12 examination pattern, then the core subjects in Commerce stream offered by BSEB Board include Economics, Accountancy, Business Studies and, Mathematics, Hindi and English. Each paper carries 100 marks, including the theory paper and practical assessment. To qualify the board exam students need to know the subject well. The detailed syllabus is available in the following article

https://www.google.com/amp/s/school.careers360.com/articles/bihar-board-12th-syllabus/amp

Please check it. All the best.