Hello aspirant,

First of all, I will clearly gave the scope after comolecomp the both then you have to choose whether to pursuing bsc in maths or pharmacy.

Job opportunity after bsc in maths.

• Acoustic consultant.
• Actuarial analyst.
• Actuary.
• Chartered accountant.
• Chartered certified accountant.
• Data analyst.
• Data scientist.
• Investment analyst

Competitive exams like UPSC AND ETC.

Now in pharmacy.

• Marketing
• Clinical research
• Production 
• Quality control 
• Scientist

Also you can do further studies in both the field in respective subjects.  Like Msc in maths, or Msc in pharmacy.