Hi Aspirant,
Hope you are doing great as per the question asked by you yes you can certainly take maths as a optional subjects in B.COM (//B.COM) as some schools offers as B.COM (//B.COM) with mathematics. B.COM (//mathematics.B.COM) with maths will be a great combination as it will certainly provide a good career opportunity in each and every field.
Hope you found this answer useful.Stay motivated stay positive.
All the best!
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