# Problem Writing Party February 15th - 28th

Hello Brilliant!

Brilliant's second Problem Writing Party was an even bigger success than the first. Thanks to all the contributions from Worranat, Brian, Anish, Arjen, Rajdeep, Nihar, Hobart, Jason, Pranshu, Margaret, Akshay, Lee, Jonas, Zeeshan, W Rose, Vignesh, Yash, John Michael, Sahil, Denton, Ishan, Sachin, and the countless others of you who helped!

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

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 third Problem Writing Party!

## How it Works

The party starts right now (February 15th, 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!

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 Andrew Ellinor
3 years, 1 month ago

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Sort by:

Guys , this is the list of wikis that need contributions!

- 3 years, 1 month ago

Hello,nice to see such great events taking place in the community.I'm joining the party :)

Conical hemisphere

Logging inequalities

You can't resist solving this!

Branched resistance

A sphere and a cube

Logging inequalities 2

Logging inequalities 3

Happy solving!

- 3 years, 1 month ago

Whoa this is a lot of problems! Logging inequalities 2 makes me want to cry, but I can see putting logging inequalities 3 in a challenge quiz. ;)

- 3 years, 1 month ago

Yeah,Logging inequalities 2 seemed unsuitable for a level 3 challenge quiz so I posted Logging inequalities 3.Thanks for selecting it :-)

- 3 years ago

I have a problem involving resistors. This is an old one, though.

- 3 years, 1 month ago

Whoa this looks really hard! I'll be sure it goes in a difficult resistors quiz. Thanks! Keep throwing your fun resistors questions here (easy or hard).

- 3 years ago

Thank you!

- 3 years ago

Wow. Good News @Andrew Ellinor $$:)$$

Here are my $$3$$ new questions for Surface Area. Will definitely add more in due course of time.

- 3 years, 1 month ago

These awesome graphics always add value to a problem. I know I'll be picking at least one of these (or maybe all three). Thanks Vighnesh!

- 3 years ago

$$\huge \color{blue}{\ddot \smile}$$ $$\boxed { \boxed{\text{Will try to add more in the near future}}}$$

- 3 years ago

Here are 2 problems that I have made:

Resistors - 666
Graph theory - Bipartite Graph(s)

More problems are on their way!

- 3 years, 1 month ago

I'm loving the bipartite graph problem. That works both for computer science and combinatorics. ;)

- 3 years ago

For resistors, I'd suggest my Short Circuit? and (much harder) Path of Less Resistance.

- 3 years, 1 month ago

Actually, this is my old one on Algebra-Logarithm, but I still enjoy it: Out of Reach

- 3 years, 1 month ago

I like it! I think this would belong more in Exponential Inequalities, given that you're solving something like $$2^x > k.$$ Granted, you have to take a log to figure out $$x,$$ but for Logarithmic Inequalities, I think there should be a log already present in the problem.

- 3 years, 1 month ago

Thanks, Andrew. I just came up with a new one in Tricky Quadratic Logarithm. Hope you'll like it, too. ;)

- 3 years ago

My surface area question.

- 3 years, 1 month ago

Thanks Lee! Your questions are always so entertaining, especially with the diagrams you provide. How'd you make this graphic, paint again?

- 3 years, 1 month ago

I used an online generator.

- 3 years, 1 month ago

I am sorry to have missed the previous party $$\ddot\frown$$. I was able to do this for this party:

Due to my exams, that's all I can help, will surely contribute more in the next party!

I have few old ones, you may consider this and this too. Thanks! $$\ddot\smile$$

- 3 years, 1 month ago

Don't worry about it Sravanth. Every contribution counts.

- 3 years ago

Thanks! $$\huge\ddot\smile$$

- 3 years ago

I'll start making more problems tomorrow, here is one for logarithmic inequalities

- 3 years, 1 month ago

Good one! I wasn't even thinking about the discontinuity that occurs. This makes for a fun, challenging problem for sure. This will definitely wind up in a quiz. Thanks! Feel free to throw more into this note. :)

- 3 years ago

Thank you a lot, here is one for Rotational Kinetic Energy

In my problems made before I found one that might be good for Surface Area

Whoa, so many! Haha, awesome.

- 3 years ago

Here is my question on logarithmic inequalities.

- 3 years, 1 month ago

Whoa, level 5! I never expected to see one of those in logarithmic inequalities. If we have enough hard logarithmic inequalities problems, I think it would be great to make a level 4-5 challenge quiz for this chapter!

- 3 years ago

More coming. These are for calculus of parametric equations.

- 3 years, 1 month ago

Ahhh, these are great Hobart. @Arjen Vreugdenhil already wrote a beautiful solution to one of them. That makes it more likely to wind up in a challenge quiz. ;)

- 3 years ago

Here is one for mechanics: Spinning Skater.

- 3 years, 1 month ago

Perfect. This one belongs in a quiz for sure. Thanks as always, Arjen! Keep them coming if you've got them. :)

- 3 years ago

For Geometry Circles 1 And Circle 2And Calculus Happy nightmare

- 3 years, 1 month ago

Hi Refaat, these are great and I'll make sure they get to the right quiz a some point, but currently this problem writing party is focused on these topics

- 3 years ago

My problems for Resistors and Surface area : Pipe is that , Shocker! .

- 3 years, 1 month ago

Both great. I think we're even featuring one on social media. ;)

- 3 years ago

Thanks

- 3 years ago

For surface area:

- 3 years ago

Ohh yeah, this is a winner. Very creative.

- 3 years ago

- 3 years ago

You're right, I do like resistors -w-w-

- 3 years ago

My third surface area question.

- 3 years ago

Root Approximation: Do you know Soumava's algorithm?

Staff - 3 years ago

My question on Calculus-Parametric Equations is here: Time Zero.

Do you know what happens at the dawn of time?

- 3 years ago

Another new one of mine on Geometry-Surface Area: Colorful Prisms.

Enjoy! ;)

- 3 years ago

$$\text{Another surface area problem :}$$ Ratio of surface areas

- 3 years ago

My new question on Geometry-Surface Area has come: Pyramidal Mystery.

Enjoy! ;)

- 3 years ago

For Limits :

- 3 years, 1 month ago

Sorry, but the selection of problems for limits of functions is already done.

- 3 years, 1 month ago

okay :(

- 3 years, 1 month ago

This is my question for kinematics- Three runners One winner. Hope you like it

- 3 years, 1 month ago

Thanks for having a will to contribute to wiki party Lakshya! But unfortunately , kinematics does not fall in the list of wikis that need contribution this time.I just post the list of desired wikis above.

- 3 years, 1 month ago

This is my new problem on Combinatorics-Data Presentation: Have you got health insurance?

It's kind of mixture of basic statistics, too. Suits for anyone who's interested in insurance company. ;)

- 3 years, 1 month ago

Nice! I was hoping we could finally create the data presentation quiz. I'm afraid some people find it boring, but you definitely know how to make it fun with these kinds of problems.

- 3 years ago

Thanks. It was kind of difficult to make an easy problem fun to play with, but glad you like it. ;)

- 3 years ago

This is my new one on Algebra-Logarithm Inequality: Tricky Quadratic Logarithm.

Surely you won't need your calculator if you can spot a trick in this one. ;)

- 3 years ago

Ahhh, I spot the trick. I'll keep it a secret though. ;)

- 3 years ago

Oh, you already saw it. This is what math problem in Thai class looks like. Not a piece of cake, right? ;)

- 3 years ago

Another surface area (may be too easy?)

- 3 years ago

No such thing as too easy! I'll make sure it finds a home.

- 3 years ago

Thanks! I appreciate it.

- 3 years ago

For resistors..

- 3 years ago

Here is my Surface Area problem, I will come up for another ASAP

- 3 years ago

Here is my entry (at last)

- 3 years ago

Resistors: Cantor Equivalent

Surface Area: Dimples

- 3 years ago

Here's a yummy question on Geometry-Surface Area: Some Orange?.

Feel free to taste it. ;P

- 3 years ago

A palatable question indeed.

- 3 years ago

Thanks. I got the idea when I saw oranges in the mall. Lol...

- 3 years ago

For rotational kinetic energy:

- 3 years ago

Here are two more problems:

Surface Area - Surface Area of a Molecule
Data Presentation - Where have the Jelly Beans gone?

And here's one from the last party:

Data Presentation - Jon's Hypothesis

- 3 years ago

Sorry I couldn't participate in the second problem writing party due to exams. Now that they are over, I can finally participate in this party :) Here is an easy problem to start with.

- 3 years ago

Thanks Svatejas! I hope you continue participating in this party and future parties.

- 3 years ago

My new resistor problem : Can't Resist.

- 3 years ago

More problems!

Root Approximation - Quintic Pi Polynomial
Logarithmic Inequalities - Tens everywhere

- 3 years ago

Those coefficients are delightful. Definitely makes the problem fun to try! :)

Not sure why the logarithmic inequality problem is proving to be so hard but people love it!

- 3 years ago

My second surface area question.

- 3 years ago

Awesome Surface Area problems....

- 3 years ago

Thanks! I'll make more in the future.

- 3 years ago

Will be eagerly awaiting for those problems....

- 3 years ago

Here is the question on Logarithmic inequalities.

- 3 years ago

Excellent Rishik! This question is perfect for the level 1-2 quiz we're trying to create.

- 3 years ago

Hi! @Andrew Ellinor i missed the last party but i really want to contribute to this one so here's a problem involving resistors. Resistors tend to infinty please try this problem and tell me your views about it $$:)$$

- 3 years ago

Hi Racchit, thanks for your problem! I think the problem is great (infinite resistors are always fascinating). I might recommend trying to have only one true statement so that you can put your question in multiple choice format next time. Currently it's just a little hard to read. ;)

- 3 years ago

- 3 years ago

I can't change my format to multiple choice now, can I?

- 3 years ago

- 3 years ago

Cool problems !! @Vighnesh Shenoy

- 3 years ago

Thanks!

- 3 years ago

How about February 29 though? It's a leap year this year...

- 3 years ago

I agree hahaha

- 3 years ago

got another problem in geometry, surface area - how much paint do you need?

- 3 years ago

Thanks Margaret! Don't forget, you can always use the formatting [How much paint do you need?](https://brilliant.org/problems/how-much-paint-do-you-need/) so that your link appears like this:

- 3 years ago

That is very helpful. Thank you very much@Andrew Ellinor and I will do so for the rest of my problems.

- 3 years ago

Hi @Andrew Ellinor, Here is my set of problems: (I will edit this and include 6 problems finally) Do check them out and let me know your views on them,

- 3 years ago

I like the Soumava's algorithm question! I think we'll end up using that one because we don't have many root approximation questions. However, the inequality problem you submitted doesn't involve any logarithms! :P

- 3 years ago

Thanks a lot, @Andrew Ellinor Sir.

P.S. I will add a few more questions I reckon.

P.P.S. I submitted the inequality problem for Algebra. Was is necessary btw to make it a logarithmic inequality? I will post one too, in that case.

- 3 years ago

Yep. You can see what topics we need on the publish page.

- 3 years ago

Here's my easy new question on Geometry-Surface Area: Blue or Red.

It's quite illusive actually. ;)

- 3 years ago

Haha, wouldn't have expected that as the answer.

- 3 years ago

Yeah, that's what I thought, too. Look can be deceptive.

- 3 years ago

Here are my entries.....

Nice Party..........Enjoyed many sums....

- 3 years ago

Great questions! I especially like your resistor entries.

- 3 years ago

Thanks Sir!! I am glad that you liked those..............

- 3 years ago

My fourth surface area question.

- 3 years ago

- 3 years ago

Once there were cubes and spheres, a problem for surface area. :)

- 3 years ago

Thanks Efren! I'd be careful though. You might need to edit your problem statement. You said the answer takes the form (A/B)^n, but (1/2)^3 and (1/8)^1 are of the same form, are they not?

- 3 years ago

- 3 years ago

Another new one on Combinatorics-Data Presentation: Fruit Lovers.

What is your favorite fruit? ;)

- 3 years ago

My fifth surface area question.

- 3 years ago

This is my easy one on Combinatorics-Data Presentation: Shall we go shopping?.

Probably too easy though. ;)

- 3 years ago

This is a bit off the beaten path, but it involves Calculus of parametrized curves: Tangential Curve.

(More or less the same problem is Tangential Network #1, but it does not explicitly refer to parametrized curves. Even cooler is Tangential Network #2, but no parameters there, either.)

- 3 years ago

This is my question on Geometry-Surface Area: Speak Louder.

Hope it's not too complicated. ;)

- 3 years ago

More problems:

Mechanics - Rotational Kinetic Energy

Calculus of Parametric Equations:
Second Derivative
Area
Arc Length
Surface Area
Volume

And this is the complete set of problems that I submitted for the 3rd party: My Problems

- 3 years ago