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# Problem Writing Party: February 29 - March 13

Hello Brilliant!

Brilliant's third Problem Writing Party was a great success as always. Thanks to all the contributions from Rohit, Efren, Sravanth, Agnishom, Hobart, Refaat, Chan Lye, Hjalmar, Pranshu, Manmeswar, Soumava, Racchit, Lakshya, Chinmay, Worranat, Anish, Arjen, Rajdeep, Nihar, Hobart, Jason, Pranshu, Margaret,, Lee, Jason, Vignesh and the countless others of you who helped!

This week, we were able to create a 5 new quizzes. Here are the quizzes that you all helped create:

New Brilliant Challenge Quizzes

As always, we're going to continue showing off the hard work these members of the community put in over the last week, so Brilliant will featuring these quizzes in topic listings and social media. Now that those announcements have been made, we're moving on to our fourth Problem Writing Party!

## How it Works

The party starts right now (February 29th, 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 make a submission to.

Happy writing and continue to party on!

Note by Sandeep Bhardwaj
1 year, 6 months ago

Sort by:

$\Large \text{The topics for this party can be found in the link below}$

Topics for the problem writing party

Remeber: Your problem has a better chance of being selected if you include a graphic (when appropriate) and a solution. · 1 year, 6 months ago

And don't forget to use the latex (where appropriate) in the problem and the solution. · 1 year, 6 months ago

Can I use Daum application to post a problem or to write solution? · 1 year, 6 months ago

@Sridhar Sri Yes you can, for now. But it would be great if you post the problem/solution into latex and text. If you need any guidance on latex, Daniel's LaTex Guide will help out gently. Thanks!

Waiting for you problems. $$\ddot \smile$$ · 1 year, 6 months ago

the time-keeper :-a problem i made

SHM physical pendulum · 1 year, 6 months ago

@Rohith M.Athreya Very nice problem. Thanks for your contribution. Looking for your innovative problems of more topics. :) · 1 year, 6 months ago

Hey there people :)

Here is my set.I will keep adding more problems. · 1 year, 6 months ago

Wow! Great, you've created a complete set which is awesome. Thanks a lot! Waiting for new problems to be added to the GREAT SET of yours. $$\ddot \smile$$ · 1 year, 6 months ago

Thank you sir! :D

Just a result of Fiitjee teaching me SHM :P · 1 year, 6 months ago

Great. All the best for your excellence at all the subjects you're studying! · 1 year, 6 months ago

Thank you so much sir ! :D · 1 year, 6 months ago

Computer Science $$\rightarrow$$ Sorts

· 1 year, 6 months ago

I knew I could count on you for some good computer science problems Zeeshan. ;) · 1 year, 6 months ago

This is a great contribution. I loved the problems. Thanks! $$\ddot \smile$$ · 1 year, 6 months ago

My submission:

Floor and ceiling functions: One, Two, Three

Capacitors: One, Two, Three, Four, Five, Six

Transformers: Step-up or Step-down?, Transformer DC

3D Coordinate Geometry: Three

I will update this comment if I share more problems. This is the set containing all of my problems for this party - Set · 1 year, 6 months ago

Here are some problems on Floor Functions, hope you like it .
This Floor is slippery and I love 333, but this is ... . · 1 year, 6 months ago

Nice problems Anish. The first one is yummy. Thanks! @Anish Harsha · 1 year, 6 months ago

You're welcome, sir ! :D · 1 year, 6 months ago

Another level of question on Combinatorics-Recursion: Fractal Cubes.

This one may be a little crazy. ;) · 1 year, 6 months ago

Why are all of your problems so awesome? · 1 year, 6 months ago

Thanks! Maybe because I got inspired. ;) · 1 year, 6 months ago

Electricity and Magnetism $$\rightarrow$$ Circuits $$\rightarrow$$ Resistors $$\rightarrow$$ Equivalent Resistance $$\rightarrow$$ FUN :) · 1 year, 6 months ago

@Zeeshan Ali The circuit looks like the first letter of my name. I loved it. Thanks! :) · 1 year, 6 months ago

I don't see any Computer Science question.!! Hurry up, you computer scientists! :) · 1 year, 6 months ago

Here comes my new one on Combinatorics-Recursion: Fractal Squares.

Hope you'd like it. ;) · 1 year, 6 months ago

Here are my entries..............

Capacitors - 1

Capacitors - 2

3D - 1

3D - 2

F n C - 1

SHM - 1

SHM - 2

Enjoy Solving!!! · 1 year, 6 months ago

Great problems @Manmeswar Patnaik Thanks $$\ddot \smile$$ · 1 year, 6 months ago

Thanks Sir!!.....Please check out the other entries............ @Sandeep Bhardwaj · 1 year, 6 months ago

Here is a problem on recurrence. · 1 year, 6 months ago

Nice problem @Svatejas Shivakumar

It would be great if you post an awesome solution to your problem to get it featured. Thanks! $$\ddot \smile$$ · 1 year, 6 months ago

Here's mine contribution on capacitors · 1 year, 6 months ago

Nice one. It would be great if you post an awesome solution to your problem to get it featured. Thanks! $$\ddot \smile$$ · 1 year, 6 months ago

I posted a problem on recurrence relations a few days ago.

This sounds fun, until you realize your life is at stake · 1 year, 6 months ago

Wow! This one is a bit too hard for what we're looking for in recurrence relations, but I think you've got a knack for writing some good problems. Got any fun, easy ones tucked away? · 1 year, 6 months ago

Sure, will try to come up with some fun but accessible problems. I will update the post above if I manage to write some nice ones. :) · 1 year, 6 months ago

Here are mine: ( I will keep updating)

Great Circles (recursion)

Only 0,1,2,3,4 (recursion)

Is it Algebra at all? (3-D Geometry)

Another recursion problem (recursion)

Fat Subsets (recursion)

Emergency to return (recursion) · 1 year, 6 months ago

I like trees · 1 year, 6 months ago

Cool Problem. Thanks! · 1 year, 6 months ago

@Sandeep Bhardwaj

Do check out my problems. :) I added 5 more of them. I will add more after my chemistry exam on the 9th. · 1 year, 6 months ago

Nice problems. @Soumava Pal :) · 1 year, 6 months ago

@Sandeep Bhardwaj

Thanks · 1 year, 6 months ago

I would like to contribute this problem I'm Floored for the party · 1 year, 6 months ago

Nice Problem @neelesh vij Thanks :) · 1 year, 6 months ago

See my problem, Battery Charger on the topic Capacitors and Transformers. :) · 1 year, 6 months ago

Looks great! :) · 1 year, 6 months ago

Here's my first one for Geometry-3D Coordinates: Box in the Air.

Hope it's not too easy. ;) · 1 year, 6 months ago

Cool problem with a cool name. Thanks Dr. Warm! @Worranat Pakornrat · 1 year, 6 months ago

You're welcome. Surely more will come. ;) · 1 year, 6 months ago

Blank · 1 year, 6 months ago

Sorry this is a late entry please improve it

PS:- I don't have solution · 1 year, 6 months ago

Your problem is too general... State what kind of sentence it is! (It looks quadratic, but is it?) · 1 year, 6 months ago

Please check a question on floors and ceiling click here. Please a mod or staff improve this up. Thanks · 1 year, 6 months ago

It's more likely to be chosen if you give it a solution. ;) · 1 year, 6 months ago

My new one on Algebra-Ceiling & Floor Functions: Hit the ceiling! Hit the floor!.

Hope it's not too easy. ;) · 1 year, 6 months ago

3D coordinate geometry: It's a bird! It's a plane! It's not superman... · 1 year, 6 months ago

a problem on recursions at loggerheads with logarithmic recursions · 1 year, 6 months ago

Great one, thanks! · 1 year, 6 months ago

This is my new question on Geometry-3D coordinates: Simple Section.

Enjoy! ;) · 1 year, 6 months ago

Enjoyed! ;) It was enjoyable. · 1 year, 6 months ago

Thanks! I enjoyed writing it, too. ;) · 1 year, 6 months ago

My new problem on Curve Sketching Inspired From Inspiration · 1 year, 6 months ago

You post the problems which are quite helpful specifically for the guys who are preparing for JEE. That's great. Thanks! · 1 year, 6 months ago

Sir i am preparing for JEE-ADV 2016 and my board exams are finished. Now i am Free. · 1 year, 6 months ago

That's great. Now you can post more problems for the party. ;) · 1 year, 6 months ago

I need to prepare for JEE Mains so i need to study for that . Any suggestions? · 1 year, 6 months ago

You can check out my set: Jee Queries with the Best Solutions. And if you have any specific questions, let me know and I'll help you out. · 1 year, 6 months ago

Thanks Sir. · 1 year, 6 months ago

A floor/ceiling problem. I'm going to try to think of some for curve sketching, but so far the only ones I have done before/thought of require you to actually sketch the curves...

• Twentieth integral [For this one, I'm aware that it's listed under calc, but it is a floor function problem and doesn't really require calculus other than the geometric concept of an integral]
· 1 year, 6 months ago

Cool problem.c: · 1 year, 6 months ago

@Hobart Pao Lovely problem. Yeah, I agree with the point you made. It involves the use of many concepts likely graph of floor function, geometrical interpretation of integral, arithmetic progression sum, finding the roots of a quadratic equation. :P · 1 year, 6 months ago

Thanks for the encouragement @Kunal Verma, @Sandeep Bhardwaj! · 1 year, 6 months ago

@Andrew Ellinor I just had another problem created, but I could not format it correctly. Could you please help? the problem means "the floor function of the absolute value of $$\frac {2x-3}{4}$$". What floor is it? · 1 year, 6 months ago

Fixed Margaret! Check out the LaTeX to learn something new. :)

Also, I like this problem so much that it's definitely going into a quiz. · 1 year, 6 months ago

thanks:D · 1 year, 6 months ago

Here's my recursion problem: Vole crossing

This might be too difficult for a quiz, but I think it's a pretty neat problem. · 1 year, 6 months ago

@Kerry Soderdahl This problem can be defintely used for some Level 4-5 quiz. Thanks! Looking for more great problems. :) · 1 year, 6 months ago

My third question.

Sigma Ceilings · 1 year, 6 months ago

@Lee Care Gene Nice building of ceilings. I enjoy your problems a lot. :) · 1 year, 6 months ago

the time-keeper :-a problem i made

SHM physical pendulum · 1 year, 6 months ago

@Rohith M.Athreya Great Great Great! Looking for more of your innovative problems for other topics of the Problem Writing Party. :) · 1 year, 6 months ago

sum of some floored,summed series

a problem on floor functions that i made :) · 1 year, 6 months ago

Very nice problem. I've edit this to make the latex clearer, see if that's good? · 1 year, 6 months ago

Yeah thanks! looks much more clearer now. :) · 1 year, 6 months ago

This one for starters: Triangle and Line. · 1 year, 6 months ago

@Arjen Vreugdenhil Yummy starter! :) · 1 year, 6 months ago

Here is another problem, for 3D Coordinate Geometry · 1 year, 6 months ago

@Hjalmar Orellana Soto Tangent in three dimensions is coolest. Thanks! :) · 1 year, 6 months ago

My new Question on Inductor + Capacitor · 1 year, 6 months ago

@Rishabh Deep Singh

Good problem. But it is recommended and it's great that you don't include the text into the latex. Use latex only for mathematical expressions. Can you please make edits to your problem accordingly?

Thanks! · 1 year, 6 months ago

I will do it in my upcoming Questions. · 1 year, 6 months ago

Great! I will convert this problem into text and latex necessarily. Thanks! · 1 year, 6 months ago

@Rishabh Deep Singh I've edited the above problem of yours. Can you please check if it's all good? · 1 year, 6 months ago

Thanks Sir It is perfect · 1 year, 6 months ago

Another new one on Geometry-3D coordinates: Box in the Air (Part 2).

Have fun! ;) · 1 year, 6 months ago

I would like to fit myself diagonally in that box which will be a great exercise. :P · 1 year, 6 months ago

Haha...would you like to be a cat in the box? ;) · 1 year, 6 months ago

No way man! Then I will be stuck forever there if no one comes to help me out. :P How will I use Brilliant then? · 1 year, 6 months ago

By using local box network maybe. Lol... · 1 year, 6 months ago

You'll definitely enjoy solving the following problems:

· 1 year, 6 months ago

@Zeeshan Ali I like the beautiful circuits in your problems. Thanks! · 1 year, 6 months ago

My contlibusion: Andlew's Dleam

Sorry , I can contribute only one problem this time :( · 1 year, 6 months ago

No problem, Nihar! You can contribute more problems to the following parties.

Night ploblem. ;) · 1 year, 6 months ago

Thyankss!! · 1 year, 6 months ago

I added a few problems in logarithm inequalities. What do you think of them?

Calculus of parametric equations can be tricky. I might try just parametric equations. · 1 year, 6 months ago

I loved all the problems.

It would be great if you post the problems from the topic list of this party which can be seen at the Publish Page.

Thanks! · 1 year, 6 months ago

My second question.

Sigma Floors · 1 year, 6 months ago

Is the ground floor left empty for rent? · 1 year, 6 months ago

Maybe XD · 1 year, 6 months ago

Computer Science $$\rightarrow$$ Sorts

· 1 year, 6 months ago

Nice ones. These will be great for a quiz. Thanks! · 1 year, 6 months ago

Try my new question Limit It is out of given topics. · 1 year, 6 months ago

Hi Rishabh, this is a great question! Do you think you could post problems that are focused on the topics for this problem writing party? · 1 year, 6 months ago

Ok I will. · 1 year, 6 months ago

Electricity and Magnetism $$\rightarrow$$ Circuits $$\rightarrow$$ Capacitors and Transformers $$\rightarrow$$ Never mind · 1 year, 6 months ago

Can I post the questions till 13 March · 1 year, 6 months ago

Yes , of course! Looks like @Andrew Ellinor can definitely count upon your numerous contributions for many topics for this party :) · 1 year, 6 months ago

@Deepanshu Dhruw I see that you post good problems. Excited to see your problems for this party. And yeah you can post the problems till 13 March. I'm waiting. :) · 1 year, 6 months ago

Thanks · 1 year, 6 months ago

Here's one for floor and ceiling functions:

Don't Try And Math It · 1 year, 6 months ago

Nice problem @Brandon Monsen

It would be great if you post an awesome solution to your problem to get it featured. Thanks! $$\ddot \smile$$ · 1 year, 6 months ago

Just posted one! I'll make some edits for coherence but the meat of it is there. · 1 year, 6 months ago

This time my contribution will be poor, but here is something for Floor and Ceiling Functions · 1 year, 6 months ago

Nice Problem. But the expression needs to be made more clear. In the numerator, does "2015/2016" represents the power of "2015"? · 1 year, 6 months ago

My question on Capacitance An electricity and magnetism problem by Rishabh Deep Singh · 1 year, 6 months ago

Here are my problems(I would keep updating):

https://brilliant.org/problems/a-simple-recursion-for-2016-and-2018/?group=NizZDUR4Adun · 1 year, 6 months ago

Nice problem @Samarth Agarwal

FYI if you want to link a problem, you can do it this way $$\to$$ [Name of the problem] (link)

I'm linking your problem in this comment. Here it goes: A simple recursion for 2016 and 2018

Excited to see more problems from your side. Let me know if you've any queries. Thanks $$\ddot \smile$$ · 1 year, 6 months ago

Thanx sir for creating a link to my problem, I would try to contribute more but I have exams till 18th March :( · 1 year, 6 months ago

Ahh, never mind. Focus on your exams and you can contribute to the further Problem Writing Party. Thanks $$\ddot \smile$$

All the best for your exams! · 1 year, 6 months ago

Thank you Sir.... :) · 1 year, 6 months ago

This is my new question of Calculus-Curve Sketching: Rise within Roots.

Enjoy! ;) · 1 year, 6 months ago

All right! Looks good. We could use some great curve-sketching problems. · 1 year, 6 months ago

Thank you. Glad you'd like it. ;) · 1 year, 6 months ago

More coming. These are for floor/ceiling fxns:

· 1 year, 6 months ago

Now these look like some mind benders! I'm excited for these. · 1 year, 6 months ago

Thanks! :) · 1 year, 6 months ago

I was writing the solution for your last two problems... But then I realised it was very tough to explain in solution and tiring latex work is also required!! · 1 year, 6 months ago

Here's my introductory problem for Simple Harmonic Motion(Waves- Doppler Effect) Shake it to my Beats · 1 year, 6 months ago

Beautiful! More Simple Harmonic Motion problems would be great if you can think of some fun ones! :) · 1 year, 6 months ago

Here are some problems (I will keep updating this as I post more)

Floor and ceiling functions:

Curve sketching:

Dueling functions

Where do we start?

Try FOILing, maybe? · 1 year, 6 months ago

Nice set! I particularly enjoyed Pixelated Poke Ball, being a huge pokemon fan myself. · 1 year, 6 months ago

I knew I could count on you to post a handful Jonas. These look great! · 1 year, 6 months ago

Thank you guys for the support! :) · 1 year, 6 months ago

I have included over 27 mind blowing problems in my set 26 mind turning problems · 1 year, 6 months ago

But do they have anything to do with the topics listed in this problem writing party? · 1 year, 6 months ago

First thing, why are you after my life? 2 thing 50% of the problems are related to the topics, and the last thing I did not consider making a new set for just posting here · 1 year, 6 months ago

Rishabh, First of all, please be a bit polite. Andrew is staff, and he knows exactly what is good for this wiki writing party. He only wants to make this Community a better place. He is not after your life. · 1 year, 6 months ago

Hmmmmm, ok · 1 year, 6 months ago

I viewed your set and it has very nice problems. But sorry to say , I can't find a single problem related to the topics in this problem writing party. You might review the topics here and contribute awesome problems which would force Andrew to select! · 1 year, 6 months ago

Ok!, I will do it, but I have my pre-boards and finals so I will come back to brilliant only after that · 1 year, 6 months ago

My Problem on Oscillations A classical mechanics problem by Rishabh Deep Singh · 1 year, 6 months ago

Again a nice problem! · 1 year, 6 months ago

See My Problem Roots Finding · 1 year, 6 months ago

Nice problem @Rishabh Deep Singh

I'm quite glad to see you contributing such wonderful problems. Thanks $$\ddot \smile$$ · 1 year, 6 months ago

Thanks Friend. · 1 year, 6 months ago

What are the topics that we need to put questions? · 1 year, 6 months ago

You can go to the Publish Page to get the topics needed for contribution.

Looking forward to have awesome problem from your side. Thanks! :) · 1 year, 6 months ago

Thanks. · 1 year, 6 months ago

Here are the questions from my stock on Combinatorics-Introduction to Recursion:

Snip! Snip!

Have fun! ;) · 1 year, 6 months ago

You've got a nice stock. Congratulations! · 1 year, 6 months ago

Thank you. Hope to come up with new ones, too. ;) · 1 year, 6 months ago

This is my fun question on Algebra-Floor & Ceiling Functions: Which day was it?.

And for Combinatorics-Variance: Who's the tallest of them all?.

It's kind of straight forward, but I still like it. ;) · 1 year, 6 months ago

The first problem is really fun to check your patience on calculations ;).

FYI you should use "\left \lfloor ... \right \lfloor" if the expression inside the floor doesn't fit well.

Thanks! · 1 year, 6 months ago