Paper/Pencil Problems

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GenePeer
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Re: Paper/Pencil Problems

Post by GenePeer » Sat Mar 05, 2011 2:19 pm

Problem 145 (View Problem), I think it's easier on paper than programming.
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rayfil
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Re: Paper/Pencil Problems

Post by rayfil » Sun Mar 06, 2011 12:26 am

How about adding Problem 241 (View Problem) to the list.
When you assume something, you risk being wrong half the time.

browni3141
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Re: Paper/Pencil Problems

Post by browni3141 » Mon Mar 07, 2011 3:06 am

Problem 207 (view problem) is one of the easier ones on paper I think.
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Susanne
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Re: Paper/Pencil Problems

Post by Susanne » Tue Mar 08, 2011 9:06 am

Problem 68 (View Problem) certainly should be in the list.
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zwuupeape
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Re: Paper/Pencil Problems

Post by zwuupeape » Tue Mar 08, 2011 12:13 pm

Legendre made a table of the first million prime numbers on his own, and that led him to the conjecture that is now known as the prime number theorem. We are just lazy... :)

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GenePeer
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Re: Paper/Pencil Problems

Post by GenePeer » Tue Mar 08, 2011 1:13 pm

I prefer to think of it as him being a genius. 8-)
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GenePeer
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Re: Paper/Pencil Problems

Post by GenePeer » Tue Mar 08, 2011 4:46 pm

Problem 38 (View Problem) Don't know how I missed gamma's P/P solution, and yet it's the first post.
Problem 100 (View Problem) Had done it before I learnt how to solve pell's equation by hand.
Problem 147 (View Problem) Props to Eigenray & ke9tv :shock:
Problem 148 (View Problem)

edit: I'm level 4 now! Woot woot :D
Last edited by GenePeer on Mon May 09, 2011 1:09 am, edited 5 times in total.
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cbrt74088
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Re: Paper/Pencil Problems

Post by cbrt74088 » Wed Mar 09, 2011 1:08 am

Problem 009 (View Problem) is easy too.
It's 2 equations with 3 unknowns.
I used excel to iterate through some numbers, but it's easily doable without a computer.

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GenePeer
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Re: Paper/Pencil Problems

Post by GenePeer » Thu Apr 28, 2011 3:51 pm

Problem 162 (View Problem) Treating the summation most people used as geometric series, solution can be found with just MS Calculator!

Problem 4 (View Problem) Just saw Begoner's solution on the first page.
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bass_isa
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Re: Paper/Pencil Problems

Post by bass_isa » Sun May 08, 2011 10:36 pm

I did Problem 301 (View Problem) with pencil/paper

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GenePeer
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Re: Paper/Pencil Problems

Post by GenePeer » Fri May 20, 2011 10:50 pm

Problem 168 (View Problem)
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Francky
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Re: Paper/Pencil Problems

Post by Francky » Sun May 22, 2011 8:19 pm

Problem 45 (View Problem) and I'm very proud.
I can find the next one too.
ImageEntia non sunt multiplicanda praeter necessitatem

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GenePeer
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Re: Paper/Pencil Problems

Post by GenePeer » Fri May 27, 2011 12:31 pm

Problem 175 (View Problem)
Problem 176 (View Problem)
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idantlol
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Re: Paper/Pencil Problems

Post by idantlol » Mon Aug 29, 2011 9:16 pm

If you're going to count 139 and 138 (although I personally would not have the patience to do them without a computer myself :-)), the solutions to 321,140 and 137 are pretty similar.

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GenePeer
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Re: Paper/Pencil Problems

Post by GenePeer » Mon Aug 29, 2011 10:00 pm

138 & 139 simplify to pell's equation which can be solved on paper. Your examples give pell-like equations but not doable without a computer as far as I can tell.
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idantlol
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Re: Paper/Pencil Problems

Post by idantlol » Tue Aug 30, 2011 8:26 am

Perhaps I'm saying too much, I don't know. But they can all be solved with xxx can they not?
Last edited by idantlol on Tue Aug 30, 2011 10:09 am, edited 1 time in total.

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hk
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Re: Paper/Pencil Problems

Post by hk » Tue Aug 30, 2011 9:10 am

idantlol wrote:Perhaps I'm saying too much, I don't know. But they can all be solved with ...... can they not?
Yes, you are.
Solutions to the problems are not to be discussed in this forum.
Can the spoilers in the previous posts be removed, or do I have to do it?
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GenePeer
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Re: Paper/Pencil Problems

Post by GenePeer » Tue Aug 30, 2011 11:53 am

Added. Sadly, I didn't get to read your suggestion. Would it be ok if you posted it on the Problem 321 (View Problem)? It's the only unarchived thread for those three.

Thanks.
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idantlol
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Re: Paper/Pencil Problems

Post by idantlol » Tue Aug 30, 2011 2:24 pm

Oky doke

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GenePeer
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Re: Paper/Pencil Problems

Post by GenePeer » Tue Aug 30, 2011 4:38 pm

That's how I solved the problem too. But to find "it", I had to use bruteforce like most did on the forum. Can you do find it with just paper/pencil?
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