# Online Math Open

The Online Math Open is an online math competition for teams of up to four people. This competition is renowned for having some of the most interesting, elegant, and high-quality problems written by the best high school students in the nation. For more information, see here.

To quote an official announcement

We are pleased to announce that the Fall OMO 2014 will be taking place from October 17 to October 28, 2014. You can register a team by following the instructions on our info page. OMO is a team-based contest, and we allow for teams to be up to four people. (Teams of size less than four are welcome too. In fact, every year some brave individuals solo the OMO!)

This contest is run completely over the Internet, and therefore, your team can consist of people from all over the world! We already have a team-forming thread in the OMO Forum.

We've created a set of thirty short-answer problems ranging in difficulty from easy to very challenging. Hopefully, you will find these problems to be instructive, elegant, but most importantly, fun to work on.

Cheers, The OMO Team

6 years, 9 months ago

This discussion board is a place to discuss our Daily Challenges and the math and science related to those challenges. Explanations are more than just a solution — they should explain the steps and thinking strategies that you used to obtain the solution. Comments should further the discussion of math and science.

When posting on Brilliant:

• Use the emojis to react to an explanation, whether you're congratulating a job well done , or just really confused .
• Ask specific questions about the challenge or the steps in somebody's explanation. Well-posed questions can add a lot to the discussion, but posting "I don't understand!" doesn't help anyone.
• Try to contribute something new to the discussion, whether it is an extension, generalization or other idea related to the challenge.

MarkdownAppears as
*italics* or _italics_ italics
**bold** or __bold__ bold
- bulleted- list
• bulleted
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1. numbered2. list
1. numbered
2. list
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print "hello world"
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# 4 spaces, and now they show
# up as a code block.

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MathAppears as
Remember to wrap math in $$ ... $$ or $ ... $ to ensure proper formatting.
2 \times 3 $2 \times 3$
2^{34} $2^{34}$
a_{i-1} $a_{i-1}$
\frac{2}{3} $\frac{2}{3}$
\sqrt{2} $\sqrt{2}$
\sum_{i=1}^3 $\sum_{i=1}^3$
\sin \theta $\sin \theta$
\boxed{123} $\boxed{123}$