Dear aspirant !

hope you are doing well ! Yes it is valid , no matter in which you finsihed it ,it is valid . After completing M.Sc in Mathematics, you can choose from a wide range of potential job prospects, including from Mathematician, Statistician, Teacher/Professor, Software Developer/Engineer, Sound Engineer, Financial Analyst, Investment Analyst, Meteorologist, Astronomer, Research Scientist, Data Scientist and many more .

Hope it helps you