How can I prepare myself for BdMO secondary group both in regional and national competitions? I participated in BdMO for the first time previous year, 2016 and I was in class 8 or junior group. That was my first BdMO but I got the chance to sit for National BdMO. But in National, I didn't get the chance to go on
. However, I want to do better figure both in Regional and National to go to the next step of BdMO. So,I want to know about the preparation for this group, that could be any books
,a bunch of different sites
etc. (anything) where I can learn the four important subject number theory, combinatorics, geometry, algebra (and also others). I hope that someone will help me in this regard to fulfill my cherished desire.
If anyone help me, I'll appreciate that.
Thank you very much for your time!