Try looking up the related wikis from here on Brilliant first , and then solve the corresponding questions i.e. from the Community Posts . This is the best option .

But if you are interested in advanced combinatorics , do the above mentioned things first , and start soving questions and learning new stuff side-by-side from , the Internet , Introductory Combinatorics by Richard Brualdi , A course in Combinatorics etc.

You'll get the names of the books from the IMO website where they suggest books for increasing problem solving techniques .

I've been doing Combinatorics for a while, even made it to level 5. But yet, I am completely blanked at those level 5 problems. Any wikis you have in mind to read up for them?

Easy Math Editor

`*italics*`

or`_italics_`

italics`**bold**`

or`__bold__`

boldNote: you must add a full line of space before and after lists for them to show up correctlyparagraph 1

paragraph 2

`[example link](https://brilliant.org)`

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Remember to wrap math in \( ... \) or \[ ... \] to ensure proper formatting.`2 \times 3`

`2^{34}`

`a_{i-1}`

`\frac{2}{3}`

`\sqrt{2}`

`\sum_{i=1}^3`

`\sin \theta`

`\boxed{123}`

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TopNewestTry looking up the related wikis from here on Brilliant first , and then solve the corresponding questions i.e. from the Community Posts . This is the best option .

But if you are interested in advanced combinatorics , do the above mentioned things first , and start soving questions and learning new stuff side-by-side from , the Internet , Introductory Combinatorics by Richard Brualdi , A course in Combinatorics etc.

You'll get the names of the books from the IMO website where they suggest books for increasing problem solving techniques .

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I've been doing Combinatorics for a while, even made it to level 5. But yet, I am completely blanked at those level 5 problems. Any wikis you have in mind to read up for them?

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Thanks a ton ;)

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Haha , looks like it took quite long for you to find this note !!

Welcome :)

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Same case brother :(

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