Hi Calvin Sir,

I have got an Idea. Please introduce a section for previous year papers of International Olympiads and some of the National Mathematics Olympiads of some countries.

Hi Calvin Sir,

I have got an Idea. Please introduce a section for previous year papers of International Olympiads and some of the National Mathematics Olympiads of some countries.

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TopNewest@Calvin Lin @Daniel Liu @Sreejato Bhattacharya @Brian Charlesworth – Surya Prakash · 2 years ago

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other resources that serve this purpose. – Daniel Liu · 2 years ago

There are alreadyLog in to reply

– Surya Prakash · 2 years ago

Thank you, Daniel. Daniel can you suggest me on where to start and what books to refer to learn number theory and algebra for proofathon competition.Log in to reply

website. However, they are quite expensive. You may also want to try 105 Algebra Problems, 108 Algebra Problems, and 104 Number Theory Problems. Problems from the Book is also a good albeit hard book. You can find many of the non-AoPS books online as PDF's too. – Daniel Liu · 2 years ago

If you want books, AoPS has a reasonable number of mathematics books that you can buy on theirLog in to reply

@Daniel Liu From which part did u start learning Number theory and what should i do to master Number Theory ? – Surya Prakash · 2 years ago

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– Surya Prakash · 2 years ago

Thank You DanielLog in to reply

@Daniel Liu – Surya Prakash · 2 years ago

Hey Daniel, Can U please tell me what software do you use to draw Geometric Figures as like in ur problem "Perps In Cyclic Quad".Log in to reply

Geogebra. – Daniel Liu · 2 years ago

I useLog in to reply

– Surya Prakash · 2 years ago

Thank YouLog in to reply