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# Problem Writing Party: March 14 - March 27th

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

Greetings Problem Partiers!

Problem Writing Party number four went splendidly! Even though only three community quizzes were made, we are so close to creating a handful of others. With that in mind, we'll be recycling some of the topics from previous problem writing parties. A special thanks to Zeeshan, Jonas, Hobart, Svatejas, Nihar, Toto, Rohith, Deepanshu, Lakshya, ZK, Chung, Anish, Rishabh, Brandon, Margaret, Neelesh, Akhil, Manmeswar, Arjen, Lee, Kerry, Sridhar, Kunal, Hjalmar, Soumava, Worranat, Pranshu, Mehul, and Samarth for all your contributions!

Here are the 3 quizzes that you all helped create:

New Brilliant Challenge Quizzes

We'll be showcasing these quizzes all over social media in the coming weeks because these problems truly are impressive. Okay, announcements over. Let's kick off the fifth Problem Writing Party!

## How it Works

The party starts right now (March 14th, 2016) and will last for the next two weeks. Throughout the two weeks, we will be focusing on writing awesome problems for the topics listed in quizzes that need your help on the publish page.

To join, 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! Your problem has a better chance of being selected if you include a graphic (when appropriate) and a solution.

## 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.

To be selected, problems you submit should be fun and challenging to a student in levels 1-3 for the given topic.

## -------->This Party's Topic Listing<--------

The topics of problem submission for this party can be found by navigating over to the Brilliant publish page and checking under the quizzes that need your help section. Just click the contribute button next to the topic you want to make a submission to.

Happy writing and continue to party on!

Note by Andrew Ellinor
8 months, 3 weeks ago

Sort by:

Great problems! I liked third one the most. Thanks :) · 8 months, 2 weeks ago

Thank you Sandeep :) · 8 months, 2 weeks ago

Comment deleted 8 months ago

Oh my God! · 8 months, 2 weeks ago

Thanks: -) · 8 months, 2 weeks ago

Welcome to my mysterious function problem: The Hidden Function.

Can you work out what $$f(x)$$ is? ;) · 8 months, 1 week ago

Nice set of questions ;) · 8 months, 1 week ago

Here's some of my function problems:

Function Challenge 2!

Function Challenge 3!

Function Challenge 4 (Inverse functions)

Function Challenge 5 (Function graphs) · 8 months, 1 week ago

My new problem on Geometry-Coordinate Plane has come: The Tale of Two Trigones.

Can you find the area of the two? ;) · 8 months, 2 weeks ago

$\text{You will enjoy solving these problems, believe me..}$

Computer Science $$\rightarrow$$ Types and Data Structures $$\rightarrow$$ Graphs $$\rightarrow$$ Can you count edges ?

Computer Science $$\rightarrow$$ Types and Data Structures $$\rightarrow$$ Graphs $$\rightarrow$$ Identify the graph

Computer Science $$\rightarrow$$ Types and Data Structures $$\rightarrow$$ Graphs $$\rightarrow$$ Identify the Adjacency List · 8 months, 2 weeks ago

I guess believing you is worth. Thanks for the awesome problems. :) · 8 months, 2 weeks ago

Algebra $$\rightarrow$$ Functions $$\rightarrow$$ Domain of 'fog'

Algebra $$\rightarrow$$ Functions $$\rightarrow$$ Let's get rid of Radicals

Algebra $$\rightarrow$$ Functions $$\rightarrow$$ Which type of function is it? (I)

Algebra $$\rightarrow$$ Functions $$\rightarrow$$ Restrictions on Domain

Algebra $$\rightarrow$$ Functions $$\rightarrow$$ Cute Function · 8 months, 2 weeks ago

What a cool set of problems! This is really a wonderful contribution. Thanks! :) · 8 months, 2 weeks ago

My entries :

Relative SHM...coming soon · 8 months, 2 weeks ago

The "Chain Reaction 1!" and "Chain Reaction 2!" initially gave me a feeling of chemistry. LOL! By the way great problems esp the SHM problems. Thanks! :) · 8 months, 2 weeks ago

Your welcome! :) · 8 months, 2 weeks ago

This is my entry for the co-ordinate part - Lets Draw the figure , Circle or Vieta's · 8 months, 2 weeks ago

I guess the coordinate part is 3-dimensional coordinate geometry. Anyways, nice problems. Looking for more problems from the topics listed. Thanks! :) · 8 months, 2 weeks ago

Thanks sandeep sir ! I am working on the functions · 8 months, 2 weeks ago

Here's my entry for the party.

Topic functions: functions and more functions

Another problem(might be off topic): perfect square in polynomial form · 8 months, 3 weeks ago

Thanks for your submissions Neelesh! They look like a good start, but let me give you some feedback. When you visit the topic list for this party, note that functions is listed under algebra. So as awesome as it is, the problem you posted for functions requires calculus and might be useful for a later party.

As for the second problem you submitted, it doesn't happen to fit any of the topics we listed. :P

Keep it up though! I like both of these problems and had fun solving them. · 8 months, 3 weeks ago

I Will Post some cool coordinate and SHM Problems By Tomorrow · 8 months, 2 weeks ago

sorry for wrong submission! i'll keep it in mind and soon put up some problems · 8 months, 2 weeks ago

Two new problems:
Capacitors - Pulling apart a capacitor
Coordinate plane - Oblique Coordinates

Two old problems, updated with improved wording and solutions:
Calculus of Parametric equations - Area, Arc length · 8 months, 1 week ago

Thanks Pranshu! :) · 8 months, 1 week ago

My latest question on Geometry-Coordinate Plane: Cut Through the Circle.

Hope it's not too late. ;) · 8 months, 1 week ago

Great, thanks! And it's not too late ;) · 8 months, 1 week ago

Thanks! Glad to see you again. ;) · 8 months, 1 week ago

I'm glad too to see you again and again. ;) · 8 months, 1 week ago

Lol...;) · 8 months, 1 week ago

One more original contribution: Andrew did not provide enough information! · 8 months, 2 weeks ago

Thanks Nihar! Andrew is enjoying the names of your problems. ;) · 8 months, 1 week ago

Here is my submission on functions. · 8 months, 2 weeks ago

Thanks @Svatejas Shivakumar for the nice problem! · 8 months, 1 week ago

This is my new one on Calculus-Parametric Equation: Dorothy's Flying!.

Enjoy! ;) · 8 months, 2 weeks ago

Great one! · 8 months, 1 week ago

Thanks! ;) · 8 months, 1 week ago

Sorry for being late and for the original problems but Civil Engineering department give me little time to live my life. Anyway hee is my entries . For floor function floor square sum For SHM SHM problem For Waves Waves problem · 8 months, 2 weeks ago

LOL, your department is so strict. They should give you, at least, one life to live. Thanks for the great problems that you managed to contribute even being tight scheduled. Thanks! :) · 8 months, 2 weeks ago

Thanks Sandeep :) · 8 months, 2 weeks ago

Comment deleted 8 months ago

Thanks Ashish for the nice problem. Looking for more from other topics too. Thanks :) · 8 months, 2 weeks ago

I have combined them and posted it again. · 8 months, 2 weeks ago

You're welcome. It was my duty and pleasure. :-) · 8 months, 2 weeks ago

Here is something for Functions · 8 months, 2 weeks ago

Played nicely with square root and modulus. Thanks for the nice problem. :) · 8 months, 2 weeks ago

Just got a very simple function question for beginners. inspiration never stops · 8 months, 2 weeks ago

Wonderful problem with the coolest name. Thanks :) · 8 months, 2 weeks ago

Thanks for the compliment! · 8 months, 2 weeks ago

Just type the name you want to link within [] brackets, then paste the url in ()brakets. :-) · 8 months, 2 weeks ago

Thank you so much!:D · 8 months, 2 weeks ago

Welcome, it was my pleasure · 8 months, 2 weeks ago

My Contribution is : One sided limits · 8 months, 2 weeks ago

I guess you provided the wrong link. Can you please look for that? Thanks! · 8 months, 1 week ago

Here is an old problem of mine in functions : Here . · 8 months, 2 weeks ago

Thanks Anish! · 8 months, 1 week ago

My second problem contribution: For the SHM quiz (maybe its a tad bit difficult):

'2. Wobbly ellipse · 8 months, 2 weeks ago

BTW you have got a wonderful name. :) · 8 months, 1 week ago

This is my contribution to the party: Its a problem for capacitors quiz.

· 8 months, 2 weeks ago

Thanks! :) · 8 months, 1 week ago

My contribution to capacitors section. · 8 months, 2 weeks ago

Thanks Rohit for the contribution on capacitors! · 8 months, 1 week ago

Here's mine for Functions

Who developed the mod function? · 8 months, 2 weeks ago

Thanks @Mayank Singh :) · 8 months, 1 week ago

Here's my entry for the party:
Functions...(functions) · 8 months, 2 weeks ago

Thanks for all of your cool problems. :) · 8 months, 1 week ago

Thanks for trying all of them :) · 8 months, 1 week ago

Another entry:
Coordinate Geometry · 8 months, 2 weeks ago

Another entry:
Functional Equation(functions) · 8 months, 2 weeks ago

Here's one The mysterious point And another Think you know the ellipse? Think again Both are coordinate geometry. · 8 months, 2 weeks ago

Great ones, thanks! · 8 months, 1 week ago

Here you go for Functions:- Squares R.I.P . And thanks for the mention c: · 8 months, 2 weeks ago

Nice problem, thanks! · 8 months, 1 week ago

Here's my entry, since functions are the only thing i know from the choices:

Functions: Annual Growth

It might be kind of easy.

For my second functions entry, here's The Donut Upsurge.

I'm not sure if this can classify as Algebra or Number Thoery, but functions can be applied to it so... Just enjoy The Summation Secret

And for my data representation entry: Dessert Survey · 8 months, 2 weeks ago

Wowww! Thanks for your amazing contribution. :) @Gian Tuazon · 8 months, 1 week ago

Here's mine

Cool 3-D problem

One more 3-D problem

Angle in 3-D · 8 months, 2 weeks ago

Cool problems! Thanks @Akshay Sharma · 8 months, 1 week ago

Calculus of parametric eqns.

· 8 months, 2 weeks ago

Fun problem, liked it very much. Thanks! · 8 months, 1 week ago

Here is my entry for Coordinate Geometry:

https://brilliant.org/problems/a-problem-by-soumava-pal-3/?ref_id=1147246 · 8 months, 2 weeks ago

Thanks @Soumava Pal for your contribution! · 8 months, 1 week ago

@Sandeep Bhardwaj Sorry sir, I could not give more problems because my class XII board examinations were going on. Looking forward to the next problem writing party. I will be back with more problems. · 8 months, 1 week ago

Never mind! I am aware that most of the guys were have exams in the time period of this party. And I know that the next party will be the best party as yet. :)

I hope that you did great with your exams. · 8 months, 1 week ago

Yes, everything went good, except physics. Got a bit short on time. :P Yes the next party is gonna be fun because everyone is gonna be active after these exams. · 8 months, 1 week ago

Don't worry, even your one contribution helps a lot :) · 8 months, 1 week ago

@Nihar Mahajan
Thank you for that. Though I am not too good in coordinate, and the property I used in this problem is one of the very few that I know. XD · 8 months, 1 week ago

Sir, where should i publish · 8 months, 2 weeks ago

Create your problems, post them and put a link here. · 8 months, 2 weeks ago

Thanks · 8 months, 2 weeks ago

Here are my submissions for SHM

A tunnel so long

Easy SHM

Here is for coordinate geometry (Locus problem)

Conic problem

@Andrew Ellinor · 8 months, 2 weeks ago

Thanks @Prakhar Bindal for the nice problems! · 8 months, 1 week ago

Here's mine: Andlew's phuncsion .

EDIT: This too :) Andlew's phuncsion 2 · 8 months, 2 weeks ago

Nice work on the accent tho. · 8 months, 2 weeks ago

Thanks Nihar! · 8 months, 1 week ago

My new challenging question on Geometry-Coordinate Plane has come: Bending a Triangle.

Can you bend this triangle? ;) · 8 months, 2 weeks ago

Now THAT'S the kind of fun challenging coordgeo problem I've been looking for. Thanks! · 8 months, 2 weeks ago

Thanks! More will come. ;) · 8 months, 2 weeks ago

Here are my new entry on Geometry-Coordinate Plane: 1, 2, 3, 4, 5....

& Algebra-Functions: Fibonacci Reversed.

Have fun with the new party! · 8 months, 3 weeks ago

Hey Dr. Warm! The Fibonacci Reversed question was kinda fun and I think it will go well in a level 2-3 quiz on functions.

The point-to-line distance formula is slightly overused though, so maybe there are some problems that are a little more fun. ;)

For instance, this problem uses the point-to-line distance but in an intriguing way: https://brilliant.org/problems/coupled-lines and this problem also stretches the brain a little bit: https://brilliant.org/problems/possible-right-triangles :) · 8 months, 3 weeks ago

Thanks, Andrew. I'll surely come up with more challenging lines & points. ;) · 8 months, 3 weeks ago

Hello @Andrew Ellinor here is my submission ..... · 8 months, 2 weeks ago