# IChOO Contest 2

We have decided the date for the next IChOO Contest! We have decided to release the contest PDF on March 30 at 9 AM EST. Again, you will have two weeks to submit but the test should not take longer than 1.5 to 2 hours. We trust you will not cheat by receiving help, posting on message boards, etc. IChOO Contest 2 will be of the same format as Contest 1. There will be one round of 15 multiple choice questions and 3 free-response questions, with a maximum score of 75.

This has been updated on our website!

Note by Ahaan Rungta
6 years, 2 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.
• Stay on topic — we're all here to learn more about math and science, not to hear about your favorite get-rich-quick scheme or current world events.

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2 \times 3 $2 \times 3$
2^{34} $2^{34}$
a_{i-1} $a_{i-1}$
\frac{2}{3} $\frac{2}{3}$
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\sum_{i=1}^3 $\sum_{i=1}^3$
\sin \theta $\sin \theta$
\boxed{123} $\boxed{123}$

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Welcome back to Brilliant! Been a while since you've been very active. I'll be sure to check this out! :D

- 6 years, 2 months ago

Yeah Thanks, i look forward to it.

- 6 years, 2 months ago

Yes same here.

- 6 years, 2 months ago

I have heard about the IChOO for the first time, please tell me the details about how to register and the difficulty level. Also, is there a IMaOO of maths??

- 6 years, 2 months ago

We are an organization called the Online Science Olympiads for Physics and Chemistry. You should register by going to Contests -> Register. Please make sure you are registering for the right contest!

For Math, you should visit OMO and NIMO or Proofathon.

- 6 years, 2 months ago

so interesting

- 6 years, 2 months ago