can anyone please update me regarding best maths upsc optional coaching ?
Dear,
Honestly None! Even aspirants who have joined IMS(self proclaimed to be best in business),leave it soon and prepare by themselves. Acing Maths optional require practice and practice. Questions are of moderate difficulty and mostly from solved examples of standard books which are easily available(for booklist, you can refer any toppers recommended books). After descent hold over the subject, one may join Test series to build examination temperament.
Hope this helps!