A student from ISI who have done B Stat can do MSc mathematics from the same institute. Also in other institutes offering MSc in Mathematics, you can apply for same.
For ISI, admission in Master of Mathematics requires following eligibility:
- three year Bachelor’s degree in Mathematics, or
- BE/B Tech Degree, with Mathematics as a subject, or
- B Stat degree from ISI.
Hope that, i have answered your query..