# 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
6 years, 5 months ago

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## Comments

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Top Newest

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.

- 6 years, 5 months ago

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

Thanks!

- 6 years, 5 months ago

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@Sharky Kesa I would like a solution to A trigonometric integral , Calculus

- 6 years, 5 months ago

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@Sharky Kesa : Can you please post a solution to this? :)

- 6 years, 5 months ago

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

Thanks.

- 6 years, 4 months ago

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@Sharky Kesa Can you add a solution? Thanks.

Staff - 6 years, 4 months ago

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One for CS Twenty million chances to get it wrong

- 6 years, 5 months ago

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Ah yes. I remember this problem. I'd love a solution to this

- 6 years, 5 months ago

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@Chung Gene Keun Can you add a solution to this problem?

Staff - 6 years, 5 months ago

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The Answer Is Not 0.225, Algebra

Staff - 6 years, 5 months ago

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Care to share how you solved this problem?

Staff - 6 years, 5 months ago

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@Milun Moghe I would like a solution to We Often See It Like This Electricity And Magnetism

Staff - 6 years, 5 months ago

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@Vishnuram Leonardodavinci Care to share how you solved this problem?

Staff - 6 years, 5 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

- 6 years, 4 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

- 6 years, 4 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??

- 6 years, 4 months ago

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Solve the recurrence relation, and you should be able to obtain an explicit formula. Check OEIS if necessary.

Staff - 6 years, 4 months ago

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What is OEIS??

- 6 years, 4 months ago

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Online Encyclopedia of Integer Sequences.

- 6 years, 4 months ago

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Sir can you help me with this problem??Especially the case where it is generalized(nxn determinant)??

- 6 years, 4 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

- 6 years, 4 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

- 6 years, 3 months ago

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How to solve this??? 2014 towns? 1402 roads? @Hoo Zhi Yee

- 6 years, 3 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?

- 6 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

- 6 years ago

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- 5 years, 9 months ago

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Having a doubt in this problem can you please check @Calvin Lin

- 5 years, 9 months ago

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- 5 years, 9 months ago

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@Jon Haussmann sir please provide a solution to Not as easy as it looks

- 5 years, 6 months ago

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I have posted a solution.

- 5 years, 6 months ago

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Thanks a lot again

- 5 years, 6 months ago

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I would like a solution to this Electricity and Magnetism problem: Gauss Practice (Hard)

- 5 years, 6 months ago

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Am I expected to tag people here?

- 5 years, 6 months ago

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Yes then they'll come to see your post

- 5 years, 6 months ago

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Ok. @David Mattingly: Sir can you please post a solution to the problem?

- 5 years, 6 months ago

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@Jon Haussmann sir please provide a solution for ... Inspired by mehul chaturvedi

- 4 years, 4 months ago

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Can you post the link to the problem?

- 4 years, 4 months ago

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I'm guessing he means this problem. However, there are already several distinct solutions posted.

Staff - 4 years, 4 months ago

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@Brian Charlesworth @Jon Haussmann sir please provide a solution to That is close

- 4 years, 2 months ago

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Like I said before, you need to provide a link to the problem.

- 4 years, 2 months ago

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i have posted the link https://brilliant.org/problems/that-is-close/?ref_id=1232530

- 4 years, 2 months ago

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@Jon Haussmann sir can you provide solution to this

- 3 years, 8 months ago

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@Michael Huang can u please provide a solution to your problem Sum tower of hanoi

- 2 years, 1 month ago

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Ah, but the problem is very difficult that no one has proven the answer yet. It's interesting though!

- 2 years, 1 month ago

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@Michael Huang where did you get this question from??Maybe we can search for the source to find a solution finally !!!

- 2 years, 1 month ago

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I was inspired by the Tower of Hanoi problem when I was playing around with coding and some puzzles. This problem is original. :)

- 2 years, 1 month ago

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@Michael Huang so how did you come up with the answer ?? p.s Great to know that it is original problem :)

- 2 years, 1 month ago

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It's from making logical deductions of how the disks can be shifted. But that seems to be more of brute force other than logical reasoning.

- 2 years, 1 month ago

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Thanks man...still working on he solution though ;)

- 2 years, 1 month ago

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