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Problem Writing Party: March 28th - April 10th

Hello Brilliant!

Once more, Problem Writing Party number 5 was a record breaking success: this time we made nine new quizzes! Here are the quizzes that you all helped create:

New Brilliant Challenge Quizzes
Simple Harmonic Motion: Level 2-3
Simple Harmonic Motion: Level 4-5
Functions: Level 3
Functions: Level 4
Functions: Level 5
2D Coordinate Geometry: Level 3
2D Coordinate Geometry: Level 4
2D Coordinate Geometry: Level 5
Capacitors and Transformers: Level 2-3

We're going to show off all the hard work these members of the community put in over the last week. Continue submitting your fantastic problems as we kick off our sixth Problem Writing Party!

How it Works

The party starts right now (March 28th, 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 keep the party alive!

Note by Andrew Ellinor
6 months ago

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Here's my freshly made problem on Geometry-Similar Polygon: The Lightning Scar.

Do you know the secrets behind Harry Potter's lightning scar? ;) Worranat Pakornrat · 6 months ago

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@Worranat Pakornrat Very creative! (+1) Hobart Pao · 6 months ago

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@Hobart Pao Thanks! Do you read Harry Potter as well? ;) Worranat Pakornrat · 6 months ago

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@Worranat Pakornrat A long time ago! I used to be obsessed with it. Hobart Pao · 6 months ago

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@Hobart Pao Well, then this is the chance for you to find the last and the most powerful Hallow. Lol... Worranat Pakornrat · 6 months ago

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@Worranat Pakornrat Oh my god, The fourth Hallow! Curious, curious . . . .

P.S: I hope you understand why I used "curious" :P Sravanth Chebrolu · 6 months ago

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@Sravanth Chebrolu Is that the quote from one of the characters? Hm...curious...curious...;) Worranat Pakornrat · 6 months ago

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@Worranat Pakornrat Mr. Olivander Sravanth Chebrolu · 6 months ago

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@Sravanth Chebrolu Ah...I see but he already played his part in the Elder Wand already. Now we're looking for the spear wielder. LOL... Worranat Pakornrat · 6 months ago

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This is my contribution for this party, will be posting more, hope it helps!

Sravanth Chebrolu · 6 months ago

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@Sravanth Chebrolu All the problems are wonderful. It seems that every problem is capable of making its way to the quiz. Thanks Sravanth for such great problems! Sandeep Bhardwaj · 6 months ago

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@Sandeep Bhardwaj Thanks sir! Here's one more: this. Sravanth Chebrolu · 6 months ago

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Here is a problem on Discrete Probability : Sandeep tosses a coin !.
Look at this problem too on Symmetric Polynomials : Is it really a Symmetry ?. Anish Harsha · 6 months ago

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@Anish Harsha Very nice problems Anish! Thanks :) Sandeep Bhardwaj · 6 months ago

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@Sandeep Bhardwaj Thanks, sir. I dedicate the 1st problem to you ! :) Anish Harsha · 6 months ago

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@Anish Harsha Also, see my new problem, Let's Disc, Bros !, on the topic, Volume of Revolution- Calculus. Anish Harsha · 6 months ago

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As for the final day of this party, I present to you, Algebra-Symmetrical Polynomials: Inverse of Inverses.

Enjoy! Worranat Pakornrat · 5 months, 3 weeks ago

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i have already added.. hope you will like to add. simple harmonic motion level 4 Aman Rajput · 5 months, 3 weeks ago

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@Aman Rajput Interesting, thanks! :) Sandeep Bhardwaj · 5 months, 3 weeks ago

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For the special event of my 101 followers, I present my new question on Geometry-Similar Polygons: 101 Followers Question by Dr. Warm.

Hope you guys would like it! ;) Worranat Pakornrat · 5 months, 3 weeks ago

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@Worranat Pakornrat Congratulations for grabbing 101 followers. Nice problem Dr. Warm. :) Sandeep Bhardwaj · 5 months, 3 weeks ago

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@Sandeep Bhardwaj Thanks a lot, Sandeep! ;) Worranat Pakornrat · 5 months, 3 weeks ago

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This is my new question on Algebra-Symmetrical Polynomial: Prime, Prime, Prime.

Enjoy! ;) Worranat Pakornrat · 5 months, 3 weeks ago

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@Worranat Pakornrat Enjoying :) Sandeep Bhardwaj · 5 months, 3 weeks ago

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This is my new question on Geometry-Similar Polygons: Half, Half, Half.

Hope it's not too simple. ;) Worranat Pakornrat · 5 months, 4 weeks ago

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@Worranat Pakornrat Posted the solution too ;) Sravanth Chebrolu · 5 months, 4 weeks ago

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@Sravanth Chebrolu Saw it. You're so quick! ;) Worranat Pakornrat · 5 months, 4 weeks ago

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This will be updated as necessary.

Volume of revolution:

Hobart Pao · 6 months ago

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@Hobart Pao Great great great problems. Thanks! Sandeep Bhardwaj · 5 months, 4 weeks ago

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@Sandeep Bhardwaj Thanks! Hobart Pao · 5 months, 4 weeks ago

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These are the questions in my stock:

Calculus-Volume of Revolution: Sand of Time.

Combinatorics-Probability: Hit the Jackpot! ; Crispy ABC and Fighting Fish. Worranat Pakornrat · 6 months ago

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@Worranat Pakornrat How did you get such an awesome stock? ;) Sandeep Bhardwaj · 6 months ago

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@Sandeep Bhardwaj I created it day by day. Gradually they filled up the whole stock. ;) Worranat Pakornrat · 6 months ago

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@Worranat Pakornrat I saw Sand of Time before... Hobart Pao · 6 months ago

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@Hobart Pao Oh, really? I thought it'd fit the topic, so I put it here. Worranat Pakornrat · 6 months ago

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Here are some problems by Prakhar Bindal on 2D Kinematics:

Sandeep Bhardwaj · 6 months ago

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@Sandeep Bhardwaj @Prakhar Bindal I've collected your problems in my comment. And you can check out the latex syntax to add the link of a problem here in the comments. Thanks for the nice problems! :) Sandeep Bhardwaj · 6 months ago

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@Sandeep Bhardwaj Thanks a lot Prakhar Bindal · 6 months ago

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When is the next party coming? Lee Care Gene · 5 months, 2 weeks ago

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@Lee Care Gene Currently planning a new type of party and redesigning this one :) Andrew Ellinor · 5 months, 2 weeks ago

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My problem on 2D Geometry : Tangents at parabola Vatsalya Tandon · 5 months, 2 weeks ago

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@Vatsalya Tandon Great! Thanks for the contribution. However, this party has been over, you can participate in the upcoming parties. :) Sandeep Bhardwaj · 5 months, 2 weeks ago

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@Sandeep Bhardwaj Ok Sir :) Vatsalya Tandon · 5 months, 2 weeks ago

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@Sandeep Bhardwaj From where can i know that my problem has been shortlisted for quizzes or not? @Sandeep Bhardwaj sir Prakhar Bindal · 5 months, 2 weeks ago

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@Prakhar Bindal You can click on the quizzes mentioned in the note and check out whether your problem has been selected. Remember that the mentioned quizzes are from the previous problem writing party. Sandeep Bhardwaj · 5 months, 2 weeks ago

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Here is a problem on Discrete Probability Soumava Pal · 5 months, 3 weeks ago

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@Soumava Pal Amazing problem. Thanks! :) Sandeep Bhardwaj · 5 months, 3 weeks ago

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@Soumava Pal Nice extension of a classical problem! 展豪 張 · 5 months, 3 weeks ago

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@展豪 張 Thanks. :) Soumava Pal · 5 months, 3 weeks ago

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Here is next part of my problems on 2d kinematics

Recollect the past 7 ! Prakhar Bindal · 5 months, 3 weeks ago

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Here is another of my problems on Similarity. Soumava Pal · 5 months, 3 weeks ago

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@Soumava Pal Thanks for the contribution. :) Sandeep Bhardwaj · 5 months, 3 weeks ago

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@Sandeep Bhardwaj Thank you, sir! Soumava Pal · 5 months, 3 weeks ago

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@Sandeep Bhardwaj @Sandeep Bhardwaj sir why am i not able to see ratings of problems only level appears Prakhar Bindal · 5 months, 3 weeks ago

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@Prakhar Bindal Because no one can see the ratings now. Brilliant doesn't display the ratings anymore. Only level appears for a problem. Enjoy with that. :) Sandeep Bhardwaj · 5 months, 3 weeks ago

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@Sandeep Bhardwaj ok Prakhar Bindal · 5 months, 3 weeks ago

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Here is my first contribution for Discrete Probability:How many balls?

Though its easy, I will be posting some new good problems soon. Yash Jain · 5 months, 4 weeks ago

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@Yash Jain Good problem. Thanks! Sandeep Bhardwaj · 5 months, 4 weeks ago

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Here are three problems for Similar Polygon Geometry: It may be Hard to Notice, Not Hard to Imagine and Can you Solve this Without Trig? Hjalmar Orellana Soto · 5 months, 4 weeks ago

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@Hjalmar Orellana Soto Amazing problems. I liked 3rd one the most. Thanks! Keep posting ;) Sandeep Bhardwaj · 5 months, 4 weeks ago

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@Hjalmar Orellana Soto One more for Volume of Revolution Hjalmar Orellana Soto · 5 months, 4 weeks ago

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Been some time since I last posted a question. Anyway, here is a question for similar polygons.

Tricky Triangles Lee Care Gene · 6 months ago

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@Lee Care Gene The trick is tricky. ;) Sandeep Bhardwaj · 5 months, 4 weeks ago

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Here's my new entry on Calculus-Volume by Revolution: Who ate that apple?. Worranat Pakornrat · 6 months ago

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@Worranat Pakornrat Yes, Dr. Warm ate it. Anyway, thanks! Sandeep Bhardwaj · 5 months, 4 weeks ago

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@Sandeep Bhardwaj Yum! Yum! You're welcome! ;) Worranat Pakornrat · 5 months, 4 weeks ago

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Here's my submission:

Pranshu Gaba · 6 months ago

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@Pranshu Gaba What a lovely couple of problems! Thanks :) Sandeep Bhardwaj · 5 months, 4 weeks ago

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@Sandeep Bhardwaj Thank you! I have made two more problems:

Pranshu Gaba · 5 months, 4 weeks ago

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@Pranshu Gaba Great! Sandeep Bhardwaj · 5 months, 4 weeks ago

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Maybe this old problem of mine would be useful for discrete probability:

Good Car, Bad Car Gian Tuazon · 6 months ago

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@Gian Tuazon The car in the image is definitely a bad car. But the problem is good. ;) Thanks! Sandeep Bhardwaj · 5 months, 4 weeks ago

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Filling up Spheres: This is an old problem, and is not just about solids of revolution. I hope this can do, though. :) Efren Medallo · 6 months ago

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@Efren Medallo There should be a fish in the tank. Nice problem, thanks! ;) Sandeep Bhardwaj · 5 months, 4 weeks ago

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Now it's time for Algebra-Symmetrical Polynomials: Squares In Between.

Hint: the solution is also symmetrical. ;) Worranat Pakornrat · 6 months ago

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@Worranat Pakornrat Perfect symmetry! ;) Sandeep Bhardwaj · 5 months, 3 weeks ago

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Here Are Some more problems on 2 - D Kinematics

Recollect the past 4 ! Recollect the past 5 ! Recollect the past 6 !

I Request @Sandeep Bhardwaj sir to add these problems too to his previous comment Prakhar Bindal · 6 months ago

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@Prakhar Bindal Just awesome! Sandeep Bhardwaj · 6 months ago

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@Sandeep Bhardwaj sir i am not able to see points a problem corresponds to only the level of problem is visible . can you help? Prakhar Bindal · 6 months ago

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@Prakhar Bindal Brilliant doesn't display the points of a problem anymore. Only the level is displayed. So, enjoy with the level itself. ;) @Prakhar Bindal Sandeep Bhardwaj · 5 months, 3 weeks ago

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Here is a problem on Similarity Soumava Pal · 6 months ago

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@Soumava Pal Great problem Soumava! I recommend redrawing your graphic though. The numbers are a little too small to read and they'll be even smaller if added to a quiz. Moreover, be smart about your canvas size. Make sure your graphic fills up the entire canvas instead of leaving white space around the edges. See the difference below:

Before

Before

After

After

Andrew Ellinor · 6 months ago

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@Andrew Ellinor @Andrew Ellinor

I am redrawing it right away Sir. :D Soumava Pal · 6 months ago

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@Soumava Pal Thanks! Andrew Ellinor · 6 months ago

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@Andrew Ellinor Is it okay now? @Andrew Ellinor Soumava Pal · 6 months ago

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@Soumava Pal Much, MUCH better Soumava. Thanks! Looks great now. Andrew Ellinor · 6 months ago

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@Andrew Ellinor Thank you sir. :) Soumava Pal · 6 months ago

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@Andrew Ellinor :) Soumava Pal · 6 months ago

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Here is the set of few computer science problems on Linear Data Structures Zeeshan Ali · 6 months ago

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@Zeeshan Ali Very smart set! Thanks :) Sandeep Bhardwaj · 6 months ago

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Here's my submission to the party . I will post more soon.

\(\mathbf{Kinematics}\implies\) Drive Fast ! Aditya Sharma · 6 months ago

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@Aditya Sharma Nice problem. Drive fast, but don't cross the limit. ;) Thanks! Sandeep Bhardwaj · 5 months, 4 weeks ago

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@Sandeep Bhardwaj Hehe thanks sir! . I will be updating more. Aditya Sharma · 5 months, 4 weeks ago

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Hope you like this one Find out the range! Abhishek Chopra · 6 months ago

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@Abhishek Chopra Looks difficult to me. BTW nice one. Thanks! ;) Sandeep Bhardwaj · 5 months, 4 weeks ago

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@Aditya Sky @Aditya Sky Your problems are great. Can you post such wonderful problems from the topics selected for this party? Sandeep Bhardwaj · 5 months, 3 weeks ago

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@Aditya Sky A colorful set of problems. It would be great if you could post such amazing problems from the topics selected for this party. Thanks ;) Sandeep Bhardwaj · 5 months, 4 weeks ago

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Here is my entry for Discrete Probability:
Biased Coin
Similar Polygons:
Harry Potter and Sphere 展豪 張 · 6 months ago

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@展豪 張 Great, thanks! :) Sandeep Bhardwaj · 5 months, 4 weeks ago

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@Sandeep Bhardwaj Are they too easy? ;) 展豪 張 · 5 months, 4 weeks ago

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@展豪 張 Not too easy. The problems are of intermediate level I guess. :) Keep it up! Sandeep Bhardwaj · 5 months, 4 weeks ago

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@Sandeep Bhardwaj I will work hard to create some harder problems(maybe level 5) ;) 展豪 張 · 5 months, 4 weeks ago

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Guys..Try out these questions in my stock with solutions. I did not get proper responses.

Algebra - Government Budget, Mushrooms,Khan the Barber,Financial Gain Ashwin K · 6 months ago

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@Ashwin K Problems are nice but quite apart from the topics of the party. Well, thanks and waiting for the party problems. :) Sandeep Bhardwaj · 5 months, 4 weeks ago

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Here is another problem How many points to qualify? Abhishek Chopra · 6 months ago

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@Abhishek Chopra Great problem Abhishek! Do you have any questions that pertain to the topics for this week's problem writing party though? Andrew Ellinor · 6 months ago

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Here's my entry A force of different kind Neelesh Vij · 6 months ago

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@Neelesh Vij The equation of force is of different kind. Thanks! :) Sandeep Bhardwaj · 5 months, 4 weeks ago

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@Svatejas Shivakumar haha, great problems. Thanks :) Sandeep Bhardwaj · 5 months, 4 weeks ago

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@Svatejas Shivakumar Can you please post the solution for second part as for some reasons my answer is not matching.

P.S. great question indeed. Neelesh Vij · 6 months ago

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@Neelesh Vij Actually I did a mistake in my calculation and the answer to the second part is wrong. Extremely sorry. Svatejas Shivakumar · 6 months ago

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@Svatejas Shivakumar Nevermind that, it happens with me also. Neelesh Vij · 6 months ago

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@Neelesh Vij The problem is correct now. Svatejas Shivakumar · 6 months ago

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Here is my contribution in 2D Kinematics : Collision in mid-air! Sahil Bansal · 6 months ago

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@Sahil Bansal Great problem! Thanks :) Sandeep Bhardwaj · 6 months ago

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I Have a hell lot of nice problem of 2D Kinematics (Atleast 100).

I Will be posting the best of them soon Prakhar Bindal · 6 months ago

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@Prakhar Bindal That's great! I'm waiting for your nice problems. Sandeep Bhardwaj · 6 months ago

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@Sandeep Bhardwaj I Have posted 2 of them Prakhar Bindal · 6 months ago

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@Prakhar Bindal You can post the links of the problems you post here in the comment box. Thanks! :) Sandeep Bhardwaj · 6 months ago

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@Sandeep Bhardwaj https://brilliant.org/problems/recollect-the-past-1/?ref_id=1156248

https://brilliant.org/problems/recollect-the-past-2/?ref_id=1156260

https://brilliant.org/problems/recollect-the-past-3/?ref_id=1156284 Prakhar Bindal · 6 months ago

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@Prakhar Bindal You can post your problems as link by following the syntax:

\[\text{[Name of the problem](link)}\]

And it will appear as Name of the problem. Sandeep Bhardwaj · 6 months ago

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Here comes my first one: Andlew's three symmetric numbers

Contributed before Dr. Warm. Mission accomplished. Nihar Mahajan · 6 months ago

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@Nihar Mahajan Oh, no...how could you, @Nihar Mahajan? ;) Worranat Pakornrat · 6 months ago

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@Nihar Mahajan Nice problem, Nihar! Thanks :) Sandeep Bhardwaj · 6 months ago

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