Hello,
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I haven't got your question.Are you asking about which course will be good from b.tech,MBA and MSc?
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If yes,then I have found more opportunities in MBA.
MBA equips students with broader skills and knowledge in business.
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As you mentioned you are maths student even MSC is a good option for you
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Now think about  your interest.What are you interested in.
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If your are well good in maths then  go for it.It gives you high package of income.
If you are interested in corporate world then choose MBA.
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Is this what you asked?If not please ask for further information.
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Thank you