In many countries, in order to celebrate Christmas, shops sell Advent Calendars. These are 'calendars' with something special for every day of December up to Christmas; this is usually a chocolate treat for example.

As this will be my first December on Brilliant, I have decided to create an advent calendar with math problems instead! The problems will be of varying difficulty. I will try to post the problems on the previous day to account for the time zone difference.

Have fun and enjoy solving the problems.

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`*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)`

`> This is a quote`

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}`

## Comments

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TopNewesttnk u 'n merry Christmas in advance

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It is also my first Christmas with Brilliant.org. Merry Christmas to everybody.

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Great work Michael, loving your problems, I've only had time to look at a few though. Keep up the good work!

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hi, Mukul Rathi how r u ??? em here's beginner n want to increase my math skills .

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tanx to all ,will happy x -mas

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marry Christmas

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