Hello Student

As you were in class 12 and preparing hard for final examination so you need also save preposition for Indian national mathematical Olympiad exam which is taken in the five stage of tests. It is true that both of the examination is very difficult If the student want to get very good result . Indian national mathematical Olympiad is a School level mathematical test examination which covers the mathematics syllabus of class 11 and 12. So if you try for this exam of Indian National Mathematical Olympiad, it will be better for you to try  after passing of class 12 examination and having  a good result in class 12 try for  INMO.

Hope this will help.