*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

newquizzes 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.

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!

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

Share links to great relevant problems.

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.**

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!

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boldNote: you must add a full line of space before and after lists for them to show up correctlyparagraph 1

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Remember to wrap math in \( ... \) or \[ ... \] to ensure proper formatting.`2 \times 3`

`2^{34}`

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`\sin \theta`

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## Comments

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Super cool names!

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Comment deleted Jan 24, 2016

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Haha , thanks :D

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

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

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

Algebra - Intercept of Asymptote

Geometry - Regular Polygons?

Number Theory - Primes in a Prime Base

Calculus - Divide by Prime

Combinatorics - A Peculiar Game

Classical Mechanics - Colliding Spheres

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

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

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

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

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

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Thanks for these problems

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Thanks @Pranshu Gaba for such wonderful set of problems!

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

Algebra - Rational Functions - Restrictions on Domain

Geometry - General Polygons - Area of Polygons

Number Theory - Number Bases - Base 5 or 7 or 9 ?

Calculus - Limits of Sequences - Know your limits !

Combinatorics - Expected Value - How much do you expect ?

Computer Science - Complexity/Run time Analysis - Funny Febo !

Classical Mechanics - Momentum - Angular Momentum

More over I have got two interesting problems regarding

Complexity/Run time Analysisas under:Number of Comparisons (I)

Number of Comparisions (II)

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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!

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

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thank you very much for your remarks :)

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Nice calculus double limit, and understanding algorithm questions :)

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Here are some more problems on bases -

EDITOne more - Taming the Radix

Note:Majority of them are inspired from AoPS problemsLog in to reply

Thanks @Arulx Z for the nice collection of problems.

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Thanks a lot! I have added one more.

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

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Thanks :)

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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.

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Thanks a lot for selecting my problem :)

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Number theory - Big, Bad, Binary

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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!

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Nice problem @Arjen Vreugdenhil, Level 4 though!

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

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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. :)

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

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

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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!

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Cool! Thanks a lot!

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

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

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

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Congratulations! :)

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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

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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!

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This problem here Margaret? It looks great! :)

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

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Algebra decomposition of a rational function

Number Theory Base of Number Bases

Number Theory Forget Base 10

Number Theory Powers of 3

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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!

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

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Oh, i like the number base questions.

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Algebra- 1 , 2 , 3Calculus- 1 , 2 , 3Combinatorics- 1 , 2 , 3Geometry- 1 , 2NT- 1 , 2 , 3 . 4Electricity and Magnetism- 1 , 2 , 3Is it okay to add Level 3-4-5 questions ? , or just level 1-2 ? and is the format okay , by using numbers ?

@Sandeep Bhardwaj , @Calvin Lin

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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!

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

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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.

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

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

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Check out "The Maximum Enneagon".

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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!

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Interesting, thanks!

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

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That's an interesting problem about polygons :)

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

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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!

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Thank you, sir

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I like your first problem.

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

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

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Here are my questions about polygons:

Weird Land for Sale

Master Lock

Transformer

Save Me!

3 Color Square

Polygon Complex

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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!

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

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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?

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

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my problems:

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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!

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Good problems.

Note that your third link goes to the first problem about primes. Can you fix it?

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Sir, these are my submissions

Guessing won't help!

How many numbers?

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Oh wow, I love both problems!

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

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Number theory - Problem 1 - Level 2

Number theory - Problem 2 - Level 1

Number theory - Problem 3 - Level 1

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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!

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

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Welcome sir. :)

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Awesome, I love these!

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Thanks. :)

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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! ;)

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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?

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

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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.

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

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Momentum

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Nice problem Rajdeep, thanks!

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Why has my problem been deleted ? @Calvin Lin

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

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

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

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

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Tnxs for brilliants ...

God bless you

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

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

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

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

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

I'll post others later.

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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!

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My submission:

Geometry:Equilateral makes it easy

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Level 2 problem : Limits of sequence Limit

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Here's my new one:

Combinatorics- The Big Six

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

Algebra - horizontal asymptotes

Geometry - Can you determine the sides?

Number Theory - Binary sum?

Calculus - True or false

Classical Mechanics - huge collision

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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.

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Thanks for conducting this party sir! \(\huge\ddot\smile\)

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Classical Mechanics- Momentum

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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!

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Thank you sir!

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Number Theory - Basic Bases, Tricky Factorial.

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

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Oh man, these looks good Arulx!

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

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Number Bases

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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!

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Enjoyed the problem Karthik, thanks!

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