Yes, it's possible to pursue an architecture course after completing your 12th grade with a commerce stream, provided you have taken mathematics as a subject. The Council of Architecture (CoA) mandates that students seeking to pursue a Bachelor of Architecture (B.Arch) must have studied mathematics in their 10+2 level.

Hello! Yes, you can still take architecture courses if you're a maths major studying commerce. A background in mathematics is typically required for architecture programs, but your commerce stream won't disqualify you. You must pass entrance exams that assess your drawing and design abilities in addition to your mathematical aptitude, such as the JEE Main Paper 2 or the NATA (National Aptitude Test in Architecture). Be ready to hone your drawing, visualisation, and planning abilities because architecture blends creativity, design, and technical expertise. The colleges you want to apply to may have specific requirements, so make sure to check their eligibility criteria.
All the best.

haven't studied mathematics in your class 11th and 12th