Hello,

Whatever combination of subject you have in your +2. you are eligible to pursue the CA course if you qualify for the specific proficiency exam, that is  CPT. This CPT is Chartered Accountant Common Proficiency Test. You must register with ICAI (India Chartered Accountant Institute). You have to appear for CPT, which is the c.a course entrance test, once you have qualified for CPT, then you can proceed to the inter and final c.a level. Also, you  can't go directly to inter-level because , you have to complete graduation.

Feel free to ask your doubts here in comment section.

Thank you.