Hello,
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Look, first point is a B.com is not at all a stream of math's category, C.com is all about business, account and commerce. So, you need not worry about the lack of maths subject. Few top reputed institutions ask for math's and even here maths is optional subject which can be replaced with accountancy. Now ofcourse it will be beneficial to get into admission in any of the Colleges you mentioned. Both the college's assure placement guarantee unless you are weak in your grades. Here are the link of both the Colleges can check for further details
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https://www.careers360.com/colleges/ramjas-college-delhi/amp
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https://www.careers360.com/colleges/kirori-mal-college-delhi/amp