my institute not provide maths in optional subject for commerce students
Dear Aspirant,
Commerce + Mathematics is a very good combination as you can apply for some places where you can't with commerce only like Delhi University in some courses like Bcom Hons and you'll have an upper hand if you are going for the Chartered Accountant, as the maths is not requirement but will definitely gave you an upper hand.
So if your institute is not providing and you're aiming for DU or CA then you can look for some other School.
Hope this helps. Thank you.