Hello. I have completed my 12 from arts stream without Maths and computer. So can I do BCA. And do tell some technical courses regard comp.

Many university require Maths as compulsory subject but not mandatory in every case. You can do B.A. In some cases. You can also explore on Diploma in computer application, DOEACC certifications etc. Few other good option could be - - B.A. ( correct subject combination) - B.A. LL.B - B.A. LL.B.