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How do you get answer paper for Regional Mathematics Olympiad?
you can go to www.cbse.nic .in then click pulic portal option . now go to students section and then click regional maths olympiad.and go to your favourable link
My advice would be to study calculus,inequalities,progressions and permutations they come a lot in the Olympiad.(At least 1 question of permutations and ineqaulity each year)
in order to do work in research paper of maths we can take any of the topic of maths lets take an example that i am expert in probability than i shouid know in depth that what is the basic idea...