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Request For Solutions Messageboard

I'd be using this post to help organize good problems which are lacking worthy solutions.

If you would like to see a solution to a particular problem, please state the problem title, provide a link to it and also state the topic. You can also @mention the creator, so that she/he is made aware. If the problem was already listed, you can upvote the comment. To keep this list reasonable, these problems should have been posted for at least a week.

If you added a solution to the problem, please reply to the comment. Once your solution has been upvoted several times, I'd then clear out the comment, so as to keep things fresh. (Do not post your solution as a reply)

Once someone has added a solution, I will push the comment to the top. Please can check their solution, and provide some feedback on it. If you have a different approach, add it and enlighten all of us.


Kudos to the following for writing solutions.
1. Jatin Yadav \( \times 3 \)
2. Siddhartha Srivastava
3. Kumar Gupta
4. Jon Haussman
5. Beakal Tiliksew
6. [Happy melodies}(https://brilliant.org/profile/happy-a75fqm/feed/)
7. Pranav Arora \( \times 2 \)
8. Nathan Ding
9. N K
10. Ariel Gershorn

Solutions which need reviewing
1. Another Infinite Circuit
2. Colourful Electrons
3. Domino domination

Note by Calvin Lin
2 years, 11 months ago

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Another Infinite Circuit, Electricity and Magnetism

@Vishnuram Leonardodavinci and @Jon Haussmann , can you please add a solution to this problem?

I understand it sounds strange because I am myself in the recent solvers list. My approach to this problem is flawed (which I later realised). I will explain it in comments once the solution is posted. Pranav Arora · 2 years, 11 months ago

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@Pranav Arora @Calvin Lin : Jon Haussmann has added a solution to the problem, can you please add him to the list? :)

Thanks! Pranav Arora · 2 years, 11 months ago

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@Sharky Kesa I would like a solution to A trigonometric integral , Calculus Jatin Yadav · 2 years, 11 months ago

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@Jatin Yadav @Jon Haussmann @Cole Coupland Can you please post a solution?

Thanks. Jatin Yadav · 2 years, 11 months ago

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@Jatin Yadav @Sharky Kesa : Can you please post a solution to this? :) Pranav Arora · 2 years, 11 months ago

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@Jatin Yadav @Sharky Kesa Can you add a solution? Thanks. Calvin Lin Staff · 2 years, 10 months ago

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One for CS Twenty million chances to get it wrong Thaddeus Abiy · 2 years, 11 months ago

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@Thaddeus Abiy Ah yes. I remember this problem. I'd love a solution to this Kp Govind · 2 years, 11 months ago

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@Kp Govind @Chung Gene Keun Can you add a solution to this problem? Calvin Lin Staff · 2 years, 11 months ago

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@Milun Moghe I would like a solution to We Often See It Like This Electricity And Magnetism Calvin Lin Staff · 2 years, 11 months ago

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@Calvin Lin @Vishnuram Leonardodavinci Care to share how you solved this problem? Calvin Lin Staff · 2 years, 11 months ago

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The Answer Is Not 0.225, Algebra Calvin Lin Staff · 2 years, 11 months ago

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@Calvin Lin @Sami Cool @Ritwik Mohanty @Nilotpal Chakraborty @Irvi Firqotul Aini @Kevin J. @Sameer Wadjikar

Care to share how you solved this problem? Calvin Lin Staff · 2 years, 11 months ago

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@Jon Haussmann sir can you provide solution to this Starwar Clone · 1 month, 3 weeks ago

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@Brian Charlesworth @Jon Haussmann sir please provide a solution to That is close Starwar Clone · 8 months, 3 weeks ago

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@Starwar Clone Like I said before, you need to provide a link to the problem. Jon Haussmann · 8 months, 3 weeks ago

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@Jon Haussmann i have posted the link https://brilliant.org/problems/that-is-close/?ref_id=1232530 Starwar Clone · 8 months, 3 weeks ago

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@Jon Haussmann sir please provide a solution for ... Inspired by mehul chaturvedi Starwar Clone · 10 months, 3 weeks ago

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@Starwar Clone Can you post the link to the problem? Jon Haussmann · 10 months, 3 weeks ago

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@Jon Haussmann I'm guessing he means this problem. However, there are already several distinct solutions posted. Calvin Lin Staff · 10 months, 3 weeks ago

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I would like a solution to this Electricity and Magnetism problem: Gauss Practice (Hard) Kp Govind · 2 years ago

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@Kp Govind Am I expected to tag people here? Kp Govind · 2 years ago

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@Kp Govind Yes then they'll come to see your post Starwar Clone · 2 years ago

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@Starwar Clone Ok. @David Mattingly: Sir can you please post a solution to the problem? Kp Govind · 2 years ago

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@Jon Haussmann sir please provide a solution to Not as easy as it looks Starwar Clone · 2 years ago

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@Starwar Clone I have posted a solution. Jon Haussmann · 2 years ago

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@Jon Haussmann Thanks a lot again Starwar Clone · 2 years ago

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This problem Megh Choksi · 2 years, 2 months ago

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Having a doubt in this problem can you please check @Calvin Lin Megh Choksi · 2 years, 2 months ago

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This problem Megh Choksi · 2 years, 2 months ago

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@Jon Haussmann @calvin lin @ Vishnuram leonardodavinci Ap or not ap part 2 .....Please provide a solution to this problem Starwar Clone · 2 years, 6 months ago

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https://brilliant.org/community-problem/its-youngs-excluded-not-olds-included/?group=lyFLsSKNBAIu @Milun Moghe @Vishnuram Leonardodavinci @Anish Puthuraya
Can you please add a solution to it? Anup Navin · 2 years, 8 months ago

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How to solve this??? 2014 towns? 1402 roads? @Hoo Zhi Yee Happy Melodies · 2 years, 9 months ago

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Its just a note. But could someone please post a suggestion on how to go about with it Buried Treasure Vishwa Shah · 2 years, 9 months ago

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ascending and descending please provide a solution to this problem @Calvin Lin @Jon Haussmann @Daniel Liu @Vishnuram Leonardodavinci @jatin yadav @Eddie The Head Starwar Clone · 2 years, 10 months ago

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Comment deleted Jun 10, 2014

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@Vishwa Shah I've reshared the problem. It's a standard probability problem. Calvin Lin Staff · 2 years, 10 months ago

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Sir can you help me with this problem??Especially the case where it is generalized(nxn determinant)?? Eddie The Head · 2 years, 10 months ago

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I would like a hint or a solution to the problem Domino Domination..

My approach was to come up with a recursive definition of the process and then find the solution using a computer program but I couldn't do it.....Should the problem be approached in any other way?? Eddie The Head · 2 years, 10 months ago

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@Eddie The Head Solve the recurrence relation, and you should be able to obtain an explicit formula. Check OEIS if necessary. Calvin Lin Staff · 2 years, 10 months ago

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@Calvin Lin What is OEIS?? Eddie The Head · 2 years, 10 months ago

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@Eddie The Head Online Encyclopedia of Integer Sequences.

Link Siddhartha Srivastava · 2 years, 10 months ago

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@2000 as Powers of 2..............please provide a solution to this ....@Calvin Lin @Daniel Liu @jatin yadav @Vishnuram Leonardodavinci @Jon Haussmann Starwar Clone · 2 years, 10 months ago

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Can @Anish Puthuraya please add a solution to the problem The Journey of the Solitary Rod? https://brilliant.org/community-problem/the-journey-of-the-solitary-rod/?group=aEbPpxv9oKGo&ref_id=186844 Anup Navin · 2 years, 10 months ago

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