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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TopNewesttnk u 'n merry Christmas in advance – Aaron Paul · 2 years, 5 months ago

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It is also my first Christmas with Brilliant.org. Merry Christmas to everybody. – Chew-Seong Cheong · 2 years, 5 months ago

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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! – Mukul Rathi · 2 years, 5 months ago

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– Waqas Sami · 2 years, 5 months ago

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

tanx to all ,will happy x -mas – Hadera Gebru · 2 years, 5 months ago

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marry Christmas – Waqas Sami · 2 years, 5 months ago

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