It is very simple to apply for maths Olympiad in india.You can register with Indian Talent Olympiad,one of the leading centres for Olympiad Examinations.Registrations are open for individual students.You can click on the website(https://www.indiantalent.org/Olympiad-exam-registration-student) tab on the homepage of Indian Talent Olympiad and start  with the application process.The website provides the clear instructions of registration,you can register by entering all required details such as name,standard,age, school, subject and other information,then further it would take you to the payment gateway,where you can pay the Examination fees.Registered students are allowed to participate in the weekly test series.To Apply and to know further details,you can even call on the toll free number 1800 266 9192.