Hi Nikita,
Best University which is providing, B.SC in Economics, Statistics and Mathamatics is

Christ University, Bangalore.
You have to get more than 50% marks in 10+2 from an recognized board for getting admission.
Course fees is above 2 lakh rupees.

ST.Aloysius College Mangalore(Autonomous) also offers B.SC in Maths, Statistics and Economics.
Placements are not so good but the course fees is around 30,000 per year.
Hope this will help  you.
Thank you

Hello nikita,

There are some best colleges for bsc EMS (Economics, Mathematics and statistics) as:-

•Christ University (CU), Bangalore.

•St. Xavier college,mumbai.

•St. Joseph college, bangalore.

Their infrastructure is so much good. They provide good placement with highly reputed companies.

I hope this helpful for you.

Best wishes!!