| Topic: |
Science > Physics |
| User: |
"Schoenfeld" |
| Date: |
18 Mar 2005 01:02:57 AM |
| Object: |
Puzzle |
A room is empty. 3 people walk it. 5 people walk out. How many people
remain?
.
|
|
| User: "CWatters" |
|
| Title: Re: Puzzle |
18 Mar 2005 09:42:28 AM |
|
|
"Schoenfeld" <schoenfeld1@gmail.com> wrote in message
news:1111129377.036655.265390@z14g2000cwz.googlegroups.com...
A room is empty. 3 people walk it. 5 people walk out. How many people
remain?
None. Just two wheel chairs.
.
|
|
|
|
| User: "Neil - Salem, MA USA" |
|
| Title: Re: Puzzle |
18 Mar 2005 08:57:48 AM |
|
|
"Schoenfeld" <schoenfeld1@gmail.com> wrote in message
news:1111129377.036655.265390@z14g2000cwz.googlegroups.com...
A room is empty. 3 people walk it. 5 people walk out. How many people
remain?
My guess is that 2 people were spontanously created in the room from
nothingness due to quantum fluctuations in the vacuum of space. They, plus
the original 3 people, all left the room. This left, of course, no one in
the room.
However, it certainly could happen again that more people might
spontaneously pop into existence in the room.
.
|
|
|
|
| User: "Jack Martinelli" |
|
| Title: Re: Puzzle |
19 Mar 2005 09:21:09 PM |
|
|
"Schoenfeld" <schoenfeld1@gmail.com> wrote in message
news:1111129377.036655.265390@z14g2000cwz.googlegroups.com...
A room is empty. 3 people walk it. 5 people walk out. How many people
remain?
You don't bury survivors.
The room & the people going in & of it out is a distractor -- a
red-herring -- misdirection. It is irrelevant to the question "how many
people remain". Furthermore the question "How many people remain?" is given
without any context. It kind of reminds me of Zeno's paradox. He sets up a
riddle with information about distance then asks a question relating to
time - and makes it seem like a paradox. Its not.
Regards
Jack Martinelli
http://www.martinelli.org
.
|
|
|
|
| User: "Lash Rambo" |
|
| Title: Re: Puzzle |
19 Mar 2005 02:48:07 AM |
|
|
"Schoenfeld" <schoenfeld1@gmail.com> wrote in news:1111129377.036655.265390
@z14g2000cwz.googlegroups.com:
A room is empty. 3 people walk it. 5 people walk out. How many people
remain?
The number of people in the room at the time a fifth person walks out.
Not everyone enters or exits by walking. Some may jog, or run, or dance,
etc. In fact, the same person could walk in and out three times in a row,
then run in and walk out twice in a row, and that'd satisfy the problem
statement!
.
|
|
|
|
| User: "tadchem" |
|
| Title: Re: Puzzle |
18 Mar 2005 09:23:11 AM |
|
|
All of them.
Since nobody has died, all remain alive.
Tom Davidson
Richmond, VA
.
|
|
|
|
| User: "Uncle Al" |
|
| Title: Re: Puzzle |
18 Mar 2005 11:35:17 AM |
|
|
Schoenfeld wrote:
A room is empty. 3 people walk it. 5 people walk out. How many people
remain?
"Az di bobe vot gehat beytsim volt zi geven mayn zeyde."
Do you have three grandfathers?
Place a check mark in the box below if you have not read this post,
--
| |
--
If Helen Keller fell in a forest, did she make a sound?
If we call a tail a foot, how many feet does a horse have? Four! it
was a manx horse.
Idiot Schoenfeld.
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/qz.pdf
.
|
|
|
| User: "Schoenfeld" |
|
| Title: Re: Puzzle |
18 Mar 2005 11:42:27 AM |
|
|
Uncle Al wrote:
Schoenfeld wrote:
A room is empty. 3 people walk it. 5 people walk out. How many
people
remain?
"Az di bobe vot gehat beytsim volt zi geven mayn zeyde."
Do you have three grandfathers?
Place a check mark in the box below if you have not read this post,
--
| |
--
If Helen Keller fell in a forest, did she make a sound?
If we call a tail a foot, how many feet does a horse have? Four! it
was a manx horse.
Idiot Schoenfeld.
People breed, mediocre idiot.
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/qz.pdf
.
|
|
|
| User: "tadchem" |
|
| Title: Re: Puzzle |
18 Mar 2005 12:51:01 PM |
|
|
Schoenfeld wrote:
<snip>
People breed, mediocre idiot.
And next you are going to tell us that newborn "people" can walk...
....superlative idiot!
Tom Davidson
Richmond, VA
.
|
|
|
|
| User: "GR_GR" |
|
| Title: Re: Puzzle |
20 Mar 2005 03:10:41 AM |
|
|
Schoenfeld wrote:
Uncle Al wrote:
Schoenfeld wrote:
A room is empty. 3 people walk it. 5 people walk out. How many
people
remain?
"Az di bobe vot gehat beytsim volt zi geven mayn zeyde."
Do you have three grandfathers?
Place a check mark in the box below if you have not read this post,
--
| |
--
If Helen Keller fell in a forest, did she make a sound?
If we call a tail a foot, how many feet does a horse have? Four! it
was a manx horse.
Idiot Schoenfeld.
People breed, mediocre idiot.
So do monkeys, else why do you exist?
.
|
|
|
|
|
| User: "" |
|
| Title: Re: Puzzle |
18 Mar 2005 02:24:25 PM |
|
|
Uncle Al wrote:
Schoenfeld wrote:
A room is empty. 3 people walk it. 5 people walk out. How many
people
remain?
"Az di bobe vot gehat beytsim volt zi geven mayn zeyde."
Do you have three grandfathers?
Place a check mark in the box below if you have not read this post,
--
| xx |
--
If Helen Keller fell in a forest, did she make a sound?
If we call a tail a foot, how many feet does a horse have? Four! it
was a manx horse.
Idiot Schoenfeld.
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/qz.pdf
Uncle Al
If only the world had a good prime number generator to help with these
tough problems--calling Jim H 1357,1357 Hmmmm--1357,1357
Hmmmmm--1357..... ;-)
.
|
|
|
|
|
| User: "pete" |
|
| Title: Re: Puzzle |
18 Mar 2005 08:44:57 AM |
|
|
Schoenfeld wrote:
A room is empty. 3 people walk it. 5 people walk out. How many people
remain?
According to my computer, the answer is (UINT_MAX - 1).
/* BEGIN people.c */
#include <stdio.h>
#include <limits.h>
int main(void)
{
unsigned people;
people = 0;
people += 3;
people -= 5;
if (people == UINT_MAX - 1) {
printf("%u people remain.\n", people);
}
return 0;
}
/* END people.c */
--
pete
.
|
|
|
|
| User: "Sam Wormley" |
|
| Title: Re: Puzzle |
18 Mar 2005 01:17:06 AM |
|
|
Schoenfeld wrote:
A room is empty. 3 people walk it. 5 people walk out. How many people
remain?
Three people walking an empty room [like a dog on a leash] seems
stooopid.
.
|
|
|
|
| User: "John Gabbriel" |
|
| Title: Re: Puzzle |
18 Mar 2005 01:46:04 AM |
|
|
Schoenfeld wrote:
A room is empty. 3 people walk it. 5 people walk out. How many people
remain?
Badly worded question. How many people remain... Where? In the room?
Outside the room? On Mars?
Assuming you mean _in_ the room in question, you have given us
insufficient information.
How many were there in the room to begin with?
I guess the puzzle is figuring out what was intended.
.
|
|
|
| User: "John Gabbriel" |
|
| Title: Re: Puzzle |
18 Mar 2005 02:26:14 AM |
|
|
John Gabbriel wrote:
Schoenfeld wrote:
A room is empty. 3 people walk it. 5 people walk out. How many
people
remain?
How many were there in the room to begin with?
Ok. I reread, and you said that the room _is_ empty.
But the question is still valid, it just applies to the moment just
before 5 people walk out. You didn't tell us how many crawled into the
room, how many flew in and how many teleported in.
.
|
|
|
| User: "John Popelish" |
|
| Title: Re: Puzzle |
18 Mar 2005 10:37:28 AM |
|
|
John Gabbriel wrote:
John Gabbriel wrote:
Schoenfeld wrote:
A room is empty. 3 people walk it. 5 people walk out. How many
people
remain?
How many were there in the room to begin with?
Ok. I reread, and you said that the room _is_ empty.
But the question is still valid, it just applies to the moment just
before 5 people walk out. You didn't tell us how many crawled into the
room, how many flew in and how many teleported in.
Or how many people were brought in in that hulking big wagon the three
walkers were pulling.
--
John Popelish
.
|
|
|
|
|
|
| User: "" |
|
| Title: Re: Puzzle |
18 Mar 2005 10:28:49 AM |
|
|
Schoenfeld wrote:
A room is empty. 3 people walk it. 5 people walk out. How many people
remain?
Tut says:
2.5 billion--but the room is empty.
.
|
|
|
|
| User: "student" |
|
| Title: Re: Puzzle |
18 Mar 2005 02:02:35 AM |
|
|
assuming you meant 'in' instead of 'it' in "walk it" then a valid
solution is: two pregnant women and a third person, possibly a nurse,
go in as three and walk out five. As for the number of remaining people
(n): n = room_capacity - 5.
.
|
|
|
| User: "student" |
|
| Title: Re: Puzzle |
18 Mar 2005 02:11:42 AM |
|
|
oops i guess i forgot that the "room" was empty. so n = 0.
here's a question for you Mr. Schoenfeld. Two persons play a game where
each one places a single coin on a table when his/her turn comes. The
coins must be placed next to each other NOT on top of each other. The
last person to be able to place a coin on the table wins (since the
table has finite area). Who wins? the player who places the first coin
or the one who places the second coin?
.
|
|
|
| User: "Lash Rambo" |
|
| Title: Re: Puzzle |
19 Mar 2005 02:58:22 AM |
|
|
"student" <ifilter0@yahoo.com> wrote in news:1111133502.383560.216700
@l41g2000cwc.googlegroups.com:
oops i guess i forgot that the "room" was empty. so n = 0.
here's a question for you Mr. Schoenfeld. Two persons play a game where
each one places a single coin on a table when his/her turn comes. The
coins must be placed next to each other NOT on top of each other. The
last person to be able to place a coin on the table wins (since the
table has finite area). Who wins? the player who places the first coin
or the one who places the second coin?
The first player wins by placing a coin that covers the entire table.
.
|
|
|
|
| User: "" |
|
| Title: Re: Puzzle |
22 Mar 2005 12:21:40 PM |
|
|
The first one to place a coin on the table wins because the forth will not
touch
the other three unless it is placed on top which is not allowed.
first coin first person, second coin second person, third coin first
person the winner.
"student" <ifilter0@yahoo.com> wrote in message
news:1111133502.383560.216700@l41g2000cwc.googlegroups.com...
oops i guess i forgot that the "room" was empty. so n = 0.
here's a question for you Mr. Schoenfeld. Two persons play a game where
each one places a single coin on a table when his/her turn comes. The
coins must be placed next to each other NOT on top of each other. The
last person to be able to place a coin on the table wins (since the
table has finite area). Who wins? the player who places the first coin
or the one who places the second coin?
.
|
|
|
| User: "" |
|
| Title: Re: Puzzle |
22 Mar 2005 12:34:34 PM |
|
|
this is a test
.
|
|
|
|
|
| User: "denis feldmann" |
|
| Title: Re: Puzzle |
18 Mar 2005 03:59:25 AM |
|
|
student a écrit :
oops i guess i forgot that the "room" was empty. so n = 0.
here's a question for you Mr. Schoenfeld. Two persons play a game where
each one places a single coin on a table when his/her turn comes. The
coins must be placed next to each other NOT on top of each other. The
last person to be able to place a coin on the table wins (since the
table has finite area). Who wins? the player who places the first coin
or the one who places the second coin?
Three answers a) the most skilled player b) With perfect play, the
first one (think symetry) c) In fact, there is not enough information to
say, as you never specified the shape of the table (already, it is a
hard one on an equilateral triangle)
.
|
|
|
| User: "Lash Rambo" |
|
| Title: Re: Puzzle |
19 Mar 2005 03:04:59 AM |
|
|
denis feldmann <denis.feldmann@wanadoo.fr> wrote in news:423aa67b$0$3118
$8fcfb975@news.wanadoo.fr:
student a écrit :
oops i guess i forgot that the "room" was empty. so n = 0.
here's a question for you Mr. Schoenfeld. Two persons play a game where
each one places a single coin on a table when his/her turn comes. The
coins must be placed next to each other NOT on top of each other. The
last person to be able to place a coin on the table wins (since the
table has finite area). Who wins? the player who places the first coin
or the one who places the second coin?
Three answers a) the most skilled player b) With perfect play, the
first one (think symetry) c) In fact, there is not enough information to
say, as you never specified the shape of the table (already, it is a
hard one on an equilateral triangle)
Not so hard. The problem description never said the coin has to fit within
the parameter of the table; just that it has to be placed on the table. ;)
.
|
|
|
|
|
|
|
|
Related Articles |
|
|
