# Brilliant's First Official Problem Writing Party!

This party is now over. Thanks for your contributions. You can see what we chose by joining the next party!

Hello Brilliant,

Thanks to you (the members of the community), Brilliant was able to successfully launch two new quizzes in the past two weeks: Percentages: Level 2-3 and Quadratic Discriminant: Level 1-2.

You may have noticed the recent addition of new challenge quizzes to the Brilliant experience. These challenge quizzes are collections of some of the best problems written by the community.

Brilliant has organized many of your problems to cover hundreds of topics on all levels of difficulty, but we are looking to add even more to improve the community experience. We are looking for talented problem writers to create the fun and challenging level 1-2 problems that are missing from these challenge quizzes in Brilliant's inaugural Problem Writing Party.

## How it works

The party starts right now (January 18th, 2016) and will last for the next two weeks. Throughout the two weeks, we will be focusing on writing awesome level 1 and level 2 problems for the topics listed below. To participate, submit as many problems as you want to these listed topics. At the end of the party, Brilliant staff will be picking the best 5-10 problems for each topic. These problems will then be immortalized and formed into a challenge quiz. If we pick your problem, then you can brag to your friends because it will be displayed on Brilliant forever!

## Use this note to:

1. Ask questions about the party or brainstorming ideas from Brilliant staff.

2. Share links to great relevant problems.

3. Bounce your ideas off each other to help formulate the best problem you can.

Remember! To be selected, problems you submit should be fun and challenging to a level 1 or level 2 student.

## Topic Listing

The topics of problem submission for this party are below. Just click the link of the topic for which you want to create a problem.

Algebra - Rational Functions

Geometry - General Polygons

Number Theory - Number Bases

Calculus - Limits of Sequences

Combinatorics - Expected Value

Computer Science - Complexity/Runtime Analysis

Classical Mechanics - Momentum

Thanks!

Note by Sandeep Bhardwaj
4 years, 4 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
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Note: you must add a full line of space before and after lists for them to show up correctly
paragraph 1paragraph 2

paragraph 1

paragraph 2

[example link](https://brilliant.org)example link
> This is a quote
This is a quote
    # I indented these lines
# 4 spaces, and now they show
# up as a code block.

print "hello world"
# I indented these lines
# 4 spaces, and now they show
# up as a code block.

print "hello world"
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} $\boxed{123}$

Sort by:

- 4 years, 4 months ago

Super cool names!

- 4 years, 4 months ago

Great problems Nihar. We picked a few of these. :)

This party is now over. Time to move on to the next one!

- 4 years, 4 months ago

Hello Sir, I am submitting the following problems for the Party!

- 4 years, 4 months ago

@Pranshu Gaba These are awesome! You got one problem in almost every category too. Now that's truly impressive.

- 4 years, 4 months ago

Thank you @Sandeep Bhardwaj @Andrew Ellinor I enjoyed making the problems. :)

- 4 years, 4 months ago

Ohhh, I really like the 2nd one. That's a very common mistake made :)

Staff - 4 years, 4 months ago

A surprising number of people have got it wrong. It seems to be a very common geometry misconception.

- 4 years, 4 months ago

Thanks @Pranshu Gaba for such wonderful set of problems!

- 4 years, 4 months ago

Thanks for these problems

- 4 years, 4 months ago

Thanks for your contributions! We picked at least one of these. :)

This party is now over. Time to move on to the next one!

- 4 years, 4 months ago

After the epic weekend wiki party, I thought no other thing could beat it, but I think this will be the one!

- 4 years, 4 months ago

Thanks @Sravanth Chebrolu for nice words. I hope the same. :)

- 4 years, 4 months ago

We picked one of your problems for number bases! You can see what we chose in the next problem writing party note.

This party is now over. Thanks for your contributions. Time to move on to the next party!

- 4 years, 4 months ago

Cool! Thanks a lot!

- 4 years, 4 months ago

Should I suggest some of my old problems or I have to post new for the related topics ?@Sandeep Bhardwaj , @Calvin Lin

- 4 years, 4 months ago

Old problems are perfect suggestions. We might not have caught them when we made the original challenge quizzes because there wasn't an appropriate chapter assigned to it when it was created, but we'd be glad to take another look at it.

You should also try to tweak old examples and craft them into new ones! Old and new problems are fine. :)

- 4 years, 4 months ago

Thanks @Andrew Ellinor for responding to Chinmay's query.

- 4 years, 4 months ago

Number theory - Big, Bad, Binary

- 4 years, 4 months ago

Nice problem @Arjen Vreugdenhil, Level 4 though!

- 4 years, 4 months ago

This was indeed a tough problem Arjen, but we were able to make room for it in our Level 3 Number Bases quiz. Thanks for your submission! You can see what we chose in the next problem writing party note.

This party is now over. Thanks for your contributions. Time to move on to the next party!

- 4 years, 4 months ago

Here are some more problems on bases -

EDIT

One more - Taming the Radix

###### Note: Majority of them are inspired from AoPS problems

- 4 years, 4 months ago

Beautiful. I have a good feeling at least one of your problems on bases is going to wind up in a quiz.

- 4 years, 4 months ago

Thanks :)

- 4 years, 4 months ago

Thanks @Arulx Z for the nice collection of problems.

- 4 years, 4 months ago

Thanks a lot! I have added one more.

- 4 years, 4 months ago

Loved your problems Arulx! We picked one of those problems (maybe two?). You can see what we chose in the next problem writing party note.

This party is now over. Thanks for your contributions. Time to move on to the next party!

- 4 years, 4 months ago

Thanks a lot for selecting my problem :)

- 4 years, 4 months ago

Well.. keeping in mind Level 1 and Level 2 type of questions I have tried the following ones today:

More over I have got two interesting problems regarding Complexity/Run time Analysis as under:

- 4 years, 4 months ago

Nice calculus double limit, and understanding algorithm questions :)

Staff - 4 years, 4 months ago

Thanks for the amazing set of problems @Zeeshan Ali! I liked the second problem in the list i.e. "Area of Polygons" the most.

- 4 years, 4 months ago

thank you very much for your remarks :)

- 4 years, 4 months ago

Thanks for your contributions! We picked at least one of these. :) You can see what we chose in the next problem writing party note.

This party is now over. Thanks for your contributions. Time to move on to the next party!

- 4 years, 4 months ago

- 4 years, 4 months ago

I love it. This should definitely be fun for a level 1 or level 2 member.

- 4 years, 4 months ago

Nice problem Rajdeep, thanks!

- 4 years, 4 months ago

Why has my problem been deleted ? @Calvin Lin

- 4 years, 4 months ago

what is the procedure to write a problem ...

should I post the problem in this comment ?? I want to add some concept or examples for level 1-2 as suggested above in the calculus section.

- 4 years, 4 months ago

Hi Aman! You can simply click the link in the note as shown:

- 4 years, 4 months ago

Hello, I'd like to submit my first set of questions:

Geometry - Polygon Complex

Number Theory - 1+1 is no longer 2

More will be coming up! ;)

- 4 years, 4 months ago

Hm, for the second question, I think we should ask for the answer in base 2. Otherwise, it's more about converting into decimal system, then doing the calculation​ in binary. Thoughts?

Staff - 4 years, 4 months ago

Oh, OK. I can come up with a new question. Thanks for your advice. ;) Here's the one: Can you subtract binary numbers?

- 4 years, 4 months ago

Number theory - Problem 1 - Level 2

Number theory - Problem 2 - Level 1

Number theory - Problem 3 - Level 1

- 4 years, 4 months ago

Awesome, I love these!

- 4 years, 4 months ago

Thanks. :)

- 4 years, 4 months ago

Thanks @Sachin Vishwakarma for level 1-2 and awesome problems.

- 4 years, 4 months ago

Welcome sir. :)

- 4 years, 4 months ago

We chose one of your number theory problems for the number bases quiz. You can check it out in the next problem writing party note.

This party is now over. Thanks for your contributions. Time to move on to the next party!

- 4 years, 4 months ago

Sir, these are my submissions

Guessing won't help!

- 4 years, 4 months ago

Oh wow, I love both problems!

Staff - 4 years, 4 months ago

Oops I am sorry I didn't see the topics for the discussion.

- 4 years, 4 months ago

my problems:

1. number bases: new prime discovered

2. polygons: computer science in geo?

- 4 years, 4 months ago

Thanks Aareyan! We chose at least one of your problems.

This party is now over. Thanks for your contributions. Time to move on to the next one!

- 4 years, 4 months ago

Good problems.

Staff - 4 years, 4 months ago

Here are my questions about polygons:

Weird Land for Sale

Master Lock

Transformer

Save Me!

- 4 years, 4 months ago

Those are some colorful questions. I think you can clear up the meaning of some of these questions, to make it easier for others to understand. I've reported a few of them, could you help me understand what you're trying to say?

Staff - 4 years, 4 months ago

Thank you. I've just finished editing them. Hope they're clear this time. ;)

- 4 years, 4 months ago

Thanks Worranat! We picked some of your problems for the General Polygons quiz. You can see what we chose in the next problem writing party note.

This party is now over. Thanks for your contributions. Time to move on to the next party!

- 4 years, 4 months ago

Thank you for choosing my questions. I'm looking forward to writing for the next party! ;)

- 4 years, 4 months ago

These are my contributed problems, sir. Hope you like it

1. Number Theory - 777 base
2. Calculus - Limits e

- 4 years, 4 months ago

For the latter 2 problems, can you respond to the reports on them? Thanks!

Staff - 4 years, 4 months ago

I 've deleted the last two problems. But, substituted with another calculus problem.

- 4 years, 4 months ago

Beautiful, we picked some of your problems for one of our quizzes to be featured on Brilliant forever! You can see what we chose in the next problem writing party note.

This party is now over. Thanks for your contributions. Time to move on to the next party!

- 4 years, 4 months ago

Thank you, sir

- 4 years, 4 months ago

Check out "The Maximum Enneagon".

- 4 years, 4 months ago

Beautiful. This one is not too difficult and just what we're looking for. The Maximum Enneagon

- 4 years, 4 months ago

That's an interesting problem about polygons :)

Staff - 4 years, 4 months ago

Interesting, thanks!

- 4 years, 4 months ago

Thanks a lot @W Rose. We chose your problem to fit into our General Polygons quiz. I really enjoyed that one!

This party is now over. Thanks for your contributions. Time to move on to the next one!

- 4 years, 4 months ago

Algebra - 1 , 2 , 3

Calculus - 1 , 2 , 3

Combinatorics - 1 , 2 , 3

Geometry - 1 , 2

NT - 1 , 2 , 3 . 4

Electricity and Magnetism - 1 , 2 , 3

Is it okay to add Level 3-4-5 questions ? , or just level 1-2 ? and is the format okay , by using numbers ?

- 4 years, 4 months ago

It depends on the chapter. Given that these chapters (tend to be) are more basic, we would rather start out with the Level 1, 2 challenge quizzes first, because that is what most people would appreciate, before they delve deeper. Over time, we will be building out the higher level challenge quizzes too. E.g. The Algebra topic has a ton of problems in the Level 5 warmups.

Staff - 4 years, 4 months ago

@Calvin Lin , so is the above set okay ? or I have to post some easy problems of level 1 -2

- 4 years, 4 months ago

@Calvin Lin also update my solution number and upvotes if possible.

- 4 years, 4 months ago

Thanks @Chinmay Sangawadekar for the wonderful problems.

For this one Problem Writing Party, all the chapters mentioned in the note need level 1-2 problems. Thanks!

- 4 years, 4 months ago

sure I will post a new set of level 1-2 problems

- 4 years, 4 months ago

Great! I'm excited. $\ddot \smile$

- 4 years, 4 months ago

Number Theory Base of Number Bases

Number Theory Forget Base 10

Number Theory Powers of 3

- 4 years, 4 months ago

Thanks @Kaito Einstein for nice problems. The last one is yummie.

- 4 years, 4 months ago

I really enjoyed these. We ended up picking two of them for our number bases quiz! You can see what we chose in the next problem writing party note.

This party is now over. Thanks for your contributions. Time to move on to the next party!

- 4 years, 4 months ago

Oh, i like the number base questions.

Staff - 4 years, 4 months ago

Hey super intelligent people :DDDDD I am so happy to be in this problem writing party even though I do not have a whole bunch of math skills with me, nor I could think of good problems easily and quickly. So far I got one down Combinatorics, Expected Value - Let's play a game! and I hope it is going to be fine:D

- 4 years, 4 months ago

This problem here Margaret? It looks great! :)

- 4 years, 4 months ago

Thanks for your compliment and I will try to brainstorm some more :)

- 4 years, 4 months ago

Awesome problem Margaret! We picked your problem for our expected value quiz. You can see what we chose in the next problem writing party note.

This party is now over. Thanks for your contributions. Time to move on to the next party!

- 4 years, 4 months ago

Here's my new one for Number Bases - What do these hands mean?.

- 4 years, 4 months ago

This is a fun one. Just became the first solver!

- 4 years, 4 months ago

Congratulations! :)

- 4 years, 4 months ago

Thanks:)

- 4 years, 4 months ago

- 4 years, 4 months ago

Enjoyed the problem Karthik, thanks!

- 4 years, 4 months ago

We chose one of your number theory problems for the number bases quiz. You can check it out in the next problem writing party note.

This party is now over. Thanks for your contributions. Time to move on to the next party!

- 4 years, 4 months ago

Number Theory - Basic Bases, Tricky Factorial.

I am currently working on Number Bases so I'll be posting more of these.

- 4 years, 4 months ago

Oh man, these looks good Arulx!

Edit: I kinda want to pick Tricky Factorial right away. That's a good one.

- 4 years, 4 months ago

Classical Mechanics- Momentum

- 4 years, 4 months ago

We chose one of your problems for the momentum quiz. You can check it out in the next problem writing party note.

This party is now over. Thanks for your contributions. Time to move on to the next party!

- 4 years, 4 months ago

Thank you sir!

- 4 years, 4 months ago

Hi sir! Finally I've posted some problems, here they are:

- 4 years, 4 months ago

The best thing about all these problems is that all lie in the region of level 1-2 and all are quite interesting. Thanks @Sravanth Chebrolu for the amazing problems.

- 4 years, 4 months ago

Thanks for conducting this party sir! $\huge\ddot\smile$

- 4 years, 4 months ago

Here's my new one:

Combinatorics- The Big Six

- 4 years, 4 months ago

Level 2 problem : Limits of sequence Limit

- 4 years, 4 months ago

My submission:

Geometry:Equilateral makes it easy

- 4 years, 4 months ago

My first one was about Momentum: Caution! Slippery Surface!.

I'll post others later.

- 4 years, 4 months ago

We chose one of your problems for the momentum quiz! You can check it out in the next problem writing party note.

This party is now over. Thanks for your contributions. Time to move on to the next party!

- 4 years, 4 months ago

Combinatorics - 1. Do you expect this? , 2. Again the same old coins

- 4 years, 4 months ago

Here's a new one in Number Bases: Zodiac 12.

- 4 years, 4 months ago

A new one has come: Combinatorics- Who wants some glass marbles?.

- 4 years, 4 months ago

For Combinatorics : Happy Birthday For Calculus : Screw up your brain 1 Screw up your brain 2

- 4 years, 4 months ago

Tnxs for brilliants ...

God bless you

- 4 years, 4 months ago

@Calvin Lin Sorry I didn't see this earlier. I'm working on a contribution right now.

- 4 years, 4 months ago

Hmm! I am waiting... for yours! :D

- 4 years, 4 months ago

Don't worry you can contribute now too. I'm waiting for your problems. $\ddot \smile$

- 4 years, 4 months ago