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Roman numeral stick puzzle, 23/7=2

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Walter Francis

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Dec 28, 1999, 3:00:00 AM12/28/99
to
A friend of mine teased me with a puzzle and refuses to give me the
answer, and after many days of trying to figure it out I give up!

His puzzle is this.. Move one 'stick' from the roman numerals to make
the equation true.

XXIII
----- = II
VII

By moving, that means you can make two II's an X or V, make it 22/8=2,
whatever.. I'm not sure if the roman numerals have to be in the proper
order (I had an example as I was working on it earlier, but it's late
and I'm tired..)

I appreciate any solution.. My brain is worn out.. :) My latest
attempt to figure it out went as such (and it might not wrap so well, so
bear with me..)

Numbers in parentheses indicate a 'stick' moving within that part of the
equation, such as making II a V. Numbers in square brackets indicate
adding a stick to that part of the equation, numbers in curly brackets
indicate removing a stick from that part. I went about creating any
possible numbers, and organizing them in this fashion in a hope to
'brute force' the answer, with no luck.. Here is what I came up with..

(18, 24, 26, 31, 63) [24, 27, 32] {14, 22}
-------------------------------- = (5, 10, 50) [3, 4, 6, 9, 11, 51] {1}
(12, 52) [8] {3, 6}

--
Walter Francis
http://wally.hplx.net Powered by RedHat 6.0

jon wild

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Dec 29, 1999, 3:00:00 AM12/29/99
to
Walter Francis <wa...@pop.uky.edu> wrote:

: His puzzle is this.. Move one 'stick' from the roman numerals to make
: the equation true.

: XXIII
: ----- = II
: VII

The wording of the puzzle says to move a stick *from* the numerals, but
not *to* anywhere... take off one stick from the second X and you get:

XIIII
----- = II
VII

which will have one slightly wonky I (no wonkier than the Xs formed by
crossing a I with another I, explicitly allowed in the problem), but
it holds true. If you feel you absolutely must do *something* with the
stick, add it to the dividing line:

XIIII
------ = II
VII

I hope this satisfies your friend... cheers, jon

Jabuti

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Dec 29, 1999, 3:00:00 AM12/29/99
to
In article <386886AE...@pop.uky.edu>,
wa...@pop.uky.edu wrote:

XXII __
----- = II
VII


22/7 is appr. pi.

Jab


Sent via Deja.com http://www.deja.com/
Before you buy.

JCD

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Dec 29, 1999, 3:00:00 AM12/29/99
to
Walter Francis escreveu na mensagem <386886AE...@pop.uky.edu>...

>A friend of mine teased me with a puzzle and refuses to give me the
>answer, and after many days of trying to figure it out I give up!

>His puzzle is this.. Move one 'stick' from the roman numerals to make
>the equation true.

>XXIII
>----- = II
> VII

>By moving, that means you can make two II's an X or V, make it 22/8=2,
>whatever.. I'm not sure if the roman numerals have to be in the proper
>order (I had an example as I was working on it earlier, but it's late
>and I'm tired..)

>I appreciate any solution.. My brain is worn out.. :) My latest
>attempt to figure it out went as such (and it might not wrap so well, so
>bear with me..)


I believe the answer yr friend have is a wrong answer. Many years ago,
people used to say that pi (3.14) was equal to 22/7.

22/7 = 3.14286, and pi=3.14159

My grandfather told me that a circle with a diameter of 7 has a perimeter
of 22. You can find this story in many old books, and I believe many
people in old centuries made this simple assumption.

The answer yr friend wants is maybe this:

XXII _
----- = II
VII

Rgds
JCD

JCD

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Dec 29, 1999, 3:00:00 AM12/29/99
to

Rgds
JCD
http://go.to/jcd

Otto Edelenbosch

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Dec 29, 1999, 3:00:00 AM12/29/99
to

Walter Francis <wa...@pop.uky.edu> schreef in berichtnieuws
386886AE...@pop.uky.edu...

> A friend of mine teased me with a puzzle and refuses to give me the
> answer, and after many days of trying to figure it out I give up!
>
> His puzzle is this.. Move one 'stick' from the roman numerals to make
> the equation true.
>
> XXIII
> ----- = II
> VII
>
> By moving, that means you can make two II's an X or V, make it 22/8=2,
> whatever.. I'm not sure if the roman numerals have to be in the proper
> order (I had an example as I was working on it earlier, but it's late
> and I'm tired..)
>
> I appreciate any solution.. My brain is worn out.. :) My latest
> attempt to figure it out went as such (and it might not wrap so well, so
> bear with me..)
>
> Numbers in parentheses indicate a 'stick' moving within that part of the
> equation, such as making II a V. Numbers in square brackets indicate
> adding a stick to that part of the equation, numbers in curly brackets
> indicate removing a stick from that part. I went about creating any
> possible numbers, and organizing them in this fashion in a hope to
> 'brute force' the answer, with no luck.. Here is what I came up with..
>
> (18, 24, 26, 31, 63) [24, 27, 32] {14, 22}
> -------------------------------- = (5, 10, 50) [3, 4, 6, 9, 11, 51] {1}
> (12, 52) [8] {3, 6}
>
> --
> Walter Francis
> http://wally.hplx.net Powered by RedHat 6.0

S P O I L E R below

Hi Walter,

All the answers already given are not true and by saying this i gave you the
answer.

Otto Edelenbosch
i4one...@cistron.nl (remove NOSPAM)


Tjeerd Kootstra

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Dec 29, 1999, 3:00:00 AM12/29/99
to
>
> XXIII
> ----- = II
> VII
>
how about
XXII
---- <> II with the "=" covered by an I
VII

Ashok

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Dec 29, 1999, 3:00:00 AM12/29/99
to
In article <386886AE...@pop.uky.edu>, wa...@pop.uky.edu says...

>
>A friend of mine teased me with a puzzle and refuses to give me the
>answer, and after many days of trying to figure it out I give up!
>
>His puzzle is this.. Move one 'stick' from the roman numerals to make
>the equation true.
>
>XXIII
>----- = II
> VII
>
>Walter Francis

1. If two Roman numbers with a gap between them counts as multiplication,
this will work: move the middle I of the III in the numerator to the
right hand side, yielding

XXI I
----- = III
VII


2. An imperfect, but cute, answer is:

XXII _
----- = II
VII

22/7 is a decent approximation to pi.


Ashok


Drew Thomas

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Dec 29, 1999, 3:00:00 AM12/29/99
to

>22/7 = 3.14286, and pi=3.14159
^^^^^^^^^^
No it's not! :)
It's 3.14159265358979323846264388!
--
Grats, Drew Thomas

"There are two kinds of people I never get involved with: serial killers and
people who spell 'thanks' with an x." -- Jonathan Creek

Hey! Think it's a hoax? Go to http://www.hoaxkill.com! If it's not there,
register it!
Don't do business with spammers!


Alan Quinn

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Dec 30, 1999, 3:00:00 AM12/30/99
to
On Wed, 29 Dec 1999 10:33:15 -0000, "JCD" <j...@mail.pt> wrote:

>Walter Francis escreveu na mensagem <386886AE...@pop.uky.edu>...

>>A friend of mine teased me with a puzzle and refuses to give me the
>>answer, and after many days of trying to figure it out I give up!
>
>>His puzzle is this.. Move one 'stick' from the roman numerals to make
>>the equation true.
>
>>XXIII
>>----- = II
>> VII
>
>

>>By moving, that means you can make two II's an X or V, make it 22/8=2,
>>whatever.. I'm not sure if the roman numerals have to be in the proper
>>order (I had an example as I was working on it earlier, but it's late
>>and I'm tired..)
>
>>I appreciate any solution.. My brain is worn out.. :) My latest
>>attempt to figure it out went as such (and it might not wrap so well, so
>>bear with me..)
>
>

>I believe the answer yr friend have is a wrong answer. Many years ago,
>people used to say that pi (3.14) was equal to 22/7.
>

>22/7 = 3.14286, and pi=3.14159

Pi is approximately 3.14159265358979323846...


>
>My grandfather told me that a circle with a diameter of 7 has a perimeter
>of 22. You can find this story in many old books, and I believe many
>people in old centuries made this simple assumption.
>
>The answer yr friend wants is maybe this:
>

>XXII _
>----- = II
> VII
>

>Rgds
>JCD
>
>


girton2

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Jan 1, 2000, 3:00:00 AM1/1/00
to
No, it's not! That's as far as your simple calculator would calculate!!!!!

Signed,
Dumb Founded

Drew Thomas wrote in message <+R3zLPAn...@michthom.demon.co.uk>...


>
>>22/7 = 3.14286, and pi=3.14159

Rich Grise

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Jan 1, 2000, 3:00:00 AM1/1/00
to
Walter Francis wrote:
>
> A friend of mine teased me with a puzzle and refuses to give me the
> answer, and after many days of trying to figure it out I give up!
>
> His puzzle is this.. Move one 'stick' from the roman numerals to make
> the equation true.
>
> XXIII
> ----- = II
> VII

XXIII
----- á I
VII

(where the "á" is "Is Not Equal To")

Cheers!
Rich


Rich Grise

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Jan 1, 2000, 3:00:00 AM1/1/00
to
Ob Puzzle: Assuming the radius of the known Universe to be 12 billion
light-years, what's the error if you calculate the circumference using
the two following approximations of pi?

3.14159

3.14159265358979323846264388

Happy Odometer Year!
Rich

girton2

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Jan 1, 2000, 3:00:00 AM1/1/00
to
Rich Grise wrote in message <386E54...@entheosengineering.com>...

>Ob Puzzle: Assuming the radius of the known Universe to be 12 billion
>light-years, what's the error if you calculate the circumference using
>the two following approximations of pi?
>
>3.14159
>
>3.14159265358979323846264388


0.00003184307751886155172656 light years, (the 1/x being
31403.9997989412874233462223411074)
or
186781812.43007612851627608576 Miles


Signed,
Dumb Founded

girton2

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Jan 1, 2000, 3:00:00 AM1/1/00
to
BTW, that is as far as MY calculator would take it, also.
girton2 wrote in message <84lnad$6qd$1...@oak.prod.itd.earthlink.net>...

Rich Grise

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Jan 2, 2000, 3:00:00 AM1/2/00
to
So, you're saying the percentage difference is:

0.00003184307751886155172656 light years
----------------------------------------
12,000,000,000 light years

Which is about an error of 2.5 parts in 10e16.
I think I'll stick with 3.14159 for all practical purposes.

Thanks!
Rich

girton2

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Jan 2, 2000, 3:00:00 AM1/2/00
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I don't think either one of us will have to worry about light years!
However, it's good to know that you have a grasp of a calculator.

Signed,
Imus Be Stoopid
Rich Grise wrote in message <386F08...@entheosengineering.com>...

Public User

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Jan 5, 2000, 3:00:00 AM1/5/00
to
Walter Francis wrote:
>
> A friend of mine teased me with a puzzle and refuses to give me the
> answer, and after many days of trying to figure it out I give up!
>
> His puzzle is this.. Move one 'stick' from the roman numerals to make
> the equation true.
>
> XXIII
> ----- = II
> VII
>

Move the last stick from XXIII and put it horizontally on top of the II
on the right hand side.
This gives the approximation:

22 / 7 = Pi

Yours truly,
Will

anilpra...@gmail.com

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May 14, 2020, 12:46:42 AM5/14/20
to
XXIII
----- > II 23/7=2 3.2=2 3.2>2
VII
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