HDTenEightyP/NetNews huggingface dataset:
From: utingli@uxa.ecn.bgu.edu (Tingli Pan)
Subject: Re: HIV test
Keywords: HIV test
Organization: Educational Computing Network
Date: Mon, 21 Dec 1992 02:34:55 GMT

In article <BzKL53.BG5@news.cso.uiuc.edu> swg9183@uxa.cso.uiuc.edu (Shiming  Wu) writes:
>Hello netters:
>Next month I will be back to Mainland for a short visit. I have heard that
>upon landing on any Chinese airport, EVERY CHINESE CITIZEN must be taken
>x cc of blood and 70 US$ for HIV test. How can I avoid being rip-off like
>this in China? The local hospital offer free HIV test, does their certificate
>work?   
>Thanks.

The green card holder doesn't need the test.

Tingli Pan   
Newsgroups: soc.culture.china
From: zzuo@iastate.edu (Zhiqi Zuo)
Subject: Re: math problem
Organization: Iowa State University, Ames, IA
Distribution: usa
Date: Sat, 12 Dec 1992 06:01:09 GMT

Here is an effort to clean up this mess :) problem from SCC. 

>In article <9212110333.AA13492@mariner.sce.carleton.ca> li@sce.carleton.ca (Yao Li) writes:
>>                            Math Problem
>>                            ------------
>>
>>Getting bored? Here is a math problem.
>>
>>There is a polynomial:
>>       -a*y**n + y**(n-1) + y**(n-2) + ... + y + 1 = 0
>>where real number a>0 and the notation "y**n" represents the nth power of y.
>>
>>It's conjectured that this polynomial has a unique positive real solution y.
>>
>>Can you prove it or find a counter example?

Believe me: it is truth.

a=F(y)=(y**n-1)/[(y**n)(y-1)], F(y) is a montonous function
decreasing from +10/0 to +0/10, when y starts from +0/10 to
+10/0.

:-)
Newsgroups: soc.culture.china
From: rlm2s@helena.stat.uda.edu (cosmic)
Subject: test
Summary: none
Keywords: whatever
Organization: UGA Statistics Department
Date: Sat, 19 Dec 1992 00:38:55 GMT

test

Newsgroups: soc.culture.china
From: zzuo@iastate.edu (Zhiqi Zuo)
Subject: Re: fun problem No.2
Organization: Iowa State University, Ames, IA
Date: Fri, 18 Dec 1992 02:53:12 GMT

In article <1992Dec17.224946.5442@ee.rochester.edu> yao@ee.rochester.edu (Meng Yao) writes:
>In article <892@blue.cis.pitt.edu> yding+@pitt.edu (Yijun Ding) writes:
>>Let A1 A2 A3 denote the car is in door 1 2 3 respectively.
>>P(A2) = P(A3) = 1/3.
>>
>>P(A2 | not A3) = P(A2 but not A3) / P(not A3) 
>>               = (car in door 2 but not 3)/(car not in 3)
>>               = (1/3)/(2/3) = 1/2
>>
>>The human factor is not considered though ;-)
>>
>>-- 
>>//Yijun Ding, Pittsburgh //Go your way, be happy.
>
>You lost some information, so you get a smaller chance. My conditional

I guess that I lost something too, which is why I can't see the difference between
the following two cases.

1. If the guest didn't chose any door at first...
2. If the guest did chose No. 1 or No. 2...

Your solutions suggest that the result depends on whether the guest had chosen
some door at the beginning.

I can't see anything helpful to me, from your initial wording.

>probability goes like this:
>
>P(A2 | open 3 between 2 and 3)=P(A2, open 3 between 2 and 3)/P(open 3 between 2 and 3);
>
>here, we have a stronger condition, it not only says door 3 has a goat behind it
>(otherwise it would not have been opened), but also 3 is chosen instead of 2.
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ This hadn't been implied in the initial wording,
this was the reason that we didn't get the same answer. So, the door was NOT randomly
opened. This was where the "dificulty" of this problem was.
        
>Numerator: A2 means car in door 2, so it can not be opened, so door 3 has to be
>opened. Thus the event 'open 3 between 2 and 3' is a subset of the event 'A2'.
>So, P(A2, open 3 between 2 and 3)=P(A2)=1/3
>
>Denominator:    case 1. car in door 1:
>			P=(1/3)*(1/2)    (the 1/2 comes from choose 3 between 2 and 3,
>					which are both goats in this case)
>		case 2. car not in door 1:
>			P=(2/3)*(1/2)    (1/2 is the chance that car is in door 2, so open 3)
>	Thus P(open 3 between 2 and 3)=1/6 + 1/3=1/2
>Or you can simply say, since 2 and 3 are in equal status, the chance of open 3 is 1/2
>
>Therefore, P(A2 | open 3 between 2 and 3)=(1/3)/(1/2)=2/3

WE SEE. :-)

So, the rules declared, before the game, were: 1. the guest was allowed to chose one 
door first; 2. then the host choose one of the remaining --- so P(not open 1)=1 
in our case --- ones to open, but didn't open the door, if any, with the car in it; 
3. then the guest was allowed to switch if he liked to.

They are all the NECESSARY conditions of your solution. We missed the condition 2,
which was nobody's fault. :-) 

Anyway, I am glad that the Reader's Digest in China has some scientific level.

Have fun.
From: yangze@acf3.nyu.edu (Ze Yang)
Newsgroups: soc.culture.china
Subject: Re: math problem
Date: 13 Dec 92 19:42:19 GMT
Organization: New York University

uphhswh@Msu.oscs.montana.edu writes:

>I was a little surprised by the previous several answers given by other
>netters, because it was simply NOT TRUE.  Although I sent my answer to the
>original poster just after he posted, I feel I must post here again.

>y**n+ y**(n-1)+...+1 = (1-y**n)/(1-y)
>So the original equation becomes:
>(a+1)y**n = ay**(n+1) +1
>The intersections of LHS curve and RHS curve are solutions.
>at either y=0 or y=infinity, LHS<RHS
>so if there is intersection, there must be EVEN number's intersections.
>so the claim of UNIQUE solution is not true.

>W. Huang --- former provincial math contest No.1

Wrong, one of them is introduced by mutiplying (y-1), see my proof.

Ze Yang
From: dzhuo@clyde.ICS.UCI.EDU (Dongpei Zhuo)
Subject: 55th Anniversary of Rape of Nanking (Nanjing Massacre)
Newsgroups: soc.culture.china
Date: 16 Dec 92 05:37:30 GMT

I read from some newspaper that December 17th is the 55th anniversary of
one of the darkest periods in the history - on that day in 1937 the
Japanese Imperial Army started their brutal Rape of Nanking
(Nanjing Massacre).

I suggest posting memorial articles on the net to remind people of this
incident.  Many non-Chinese do not know that this actually happened. Instead,
most people know Japan suffered two atomic bombs, as if that was the most
tragic scene in the WWII, although in fact over 10 million Chinese died
as the result of the war.  As the Japanese emperor visited China this year,
we should also remind ourselves of this moment we should never forget.

Maybe somebody can compile some news accounts in the newspapers at that
time or any quotation from books on this subject and post them in all
the history-related and other related newsgroups.

What do you think of this suggestion?

Dongpei Zhuo
University of California, Irvine
Newsgroups: soc.culture.china
From: echeng@phys.psu.edu (Eddie Cheng)
Subject: Re: puzzle?
Organization: Penn State, Department of Physics
Date: Wed, 16 Dec 1992 02:02:29 GMT

In article <BzBvyp.FnL@news.iastate.edu> zzuo@iastate.edu (Zhiqi Zuo) writes:
|>sure. the cow's tail points at sky.
|
|Why not at the ground?


	Simple, the poor cow has got so dizzy by turning endlessly its
head has crashed into the ground!  :-(

(are we getting into biology now?  :-) )



	 Eddie
Newsgroups: soc.culture.china
From: gang@ms.uky.edu (Gang Li)
Subject: Re: Joan chen on screen? Oh, no!
Date: Sat, 12 Dec 1992 17:44:30 GMT
Organization: University Of Kentucky, Dept. of Math Sciences

<J0YE0001@ULKYVM.BITNET> writes:

>I like Mr. Bush as well as Jaon Chen.
>^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>But I never read some attacking message to Mr. Bush on this group.

You mean the attack from me? You must have not read all my posts. And also
some one even mentioned to kick his butt, which I won't suggest.
From: uphhswh@Msu.oscs.montana.edu
Newsgroups: soc.culture.china
Subject: test
Date: 17 Dec 92 17:54:43 GMT
Article-I.D.: Msu.00965382.1EBC28E0
Reply-To: uphhswh@Msu.oscs.montana.edu
Organization: Montana State University

t
Newsgroups: soc.culture.china,soc.culture.taiwan,soc.culture.hongkong
From: chyang@engin.umich.edu (Chung Hsiung Yang)
Subject: Re: Is Taiwanese CHinese?
Date: Wed, 16 Dec 92 17:55:31 EST
Organization: University of Michigan Engineering, Ann Arbor

In article <BzC2xr.G9y@acsu.buffalo.edu> v999qx29@ubvmsd.cc.buffalo.edu writes:
>
>Ethnically, Taiwanese are Chinese.
>	
	Yes.

>Culturally, Taiwanese are almost Chinese.
>
	That depends on how you define Chinese.  If Chinese=Beijinese, then
no!  Taiwanese is not Chinese.  If Chinese=Shanghinese, then no, Taiwanese
is not Chinese.  If Chinese=Hong Kongnese, then no, Taiwanese is not 
Chinese.  If Chinese=Fujinese, then yes, Taiwanese is Chinese cultrually.

	Well, Chinese culture = Pekingnese + Shanghinese + Hong Kongnese +
Fujinese + all other ethnic culture in China.  Taiwanese culture is a 
subset of Chinese culture; therefore Taiwanese culture {belongs} to 
Chinese culture.  
     
>Politically, open your eyes and watch. 
>
	Yes.  Assuming you mean Communism vs. Democracy.  Then yes, Taiwan
and Mainland China is politically different.

- C. H. Yang

>
>By the way, what is a Chinese? Your answer may not be the same as others'.


Newsgroups: soc.culture.china
From: 90908648@bradford.ac.uk
Subject: Re: IS Chairman Mao God?
Organization: Indiana University
Date: Wed, 16 Dec 1992 10:28:08 GMT


shicheng@wam.umd.edu (Shicheng Jiang) writes:

>...Mao was your brother too.

Thank you very much! First I feel overwhelmingly flattered.
Then I get such a sense of confidance as never before. What!
I've got a godbrother as powerful as Mao! And Clinton! 
And Hitler! And ... ( a total of 5,000,000,000)!



Newsgroups: soc.culture.china
From: phsj@marlin.jcu.edu.au (Su Jianfeng)
Subject: Re: To J Su 
Organization: James Cook University
Date: Sat, 12 Dec 92 10:05:53 GMT

In article <1992Dec12.061304.18609@news.Hawaii.Edu> wendong@uhunix.uhcc.Hawaii.Edu (Wen-Dong Tang) writes:
>Just read your long article about 20 million political prisoners in China.
>
>Do you have any evidence against this number? If not, please shut up!
>
>I can not prove it true of false, so I won't say anything on that.

How for you to shut up is your business, sir.   You should ask the
auther of that letter to supply the evedence.



J Su
From: yding+@pitt.edu (Yijun Ding)
Newsgroups: soc.culture.china
Subject: Re: fun problem No.2
Date: 17 Dec 92 14:27:12 GMT
Distribution: world,local
Organization: University of Pittsburgh

In article <1992Dec17.000033.4132@arizona.edu> raymond@jupiter.ame.arizona.edu (Raymond Man) writes:
>understanding the situation properly. The implicit thing is that
>the host will never open door No.1 as well as only open a door

This is not acceptable.  Unless the poster got a boss like Chen xiru, or
Zhang yaoting, he is not going to convince me ;-)  

Eager to see the answer,

-- 
//Yijun Ding, Pittsburgh //Go your way, be happy.
From: xzhao+@CS.CMU.EDU (Xudong Zhao)
Newsgroups: soc.culture.china
Subject: Re: a math problem for those who want to challenge china's math champion
Date: 14 Dec 92 22:10:20 GMT
Article-I.D.: cs.Bz9s9F.IJz.1
Organization: Carnegie Mellon University

In article <00965125.C67B2F40@Msu.oscs.montana.edu>, uphhswh@Msu.oscs.montana.edu writes:
|> this is one of the 6 problems in the final contest of national math contest of
|> 1986.
|> a plane is filled with any way by either black or white points. Prove that:
|> there must exist one equi-lateral triangle whose 3 vertex are same color.
|> 
|> I dont think there was more than 10 contestants that worked it out (judging by
|> average sores and that it is the last one of 6 problem.)  I dont know the
|> answer, which is why I didnt choose math as my career.
|> 
|> Wei Huang --- future world No1. of xxx-ology.

Give a arbitary line. There are 2 points A, B on it with the same color. 


                                 F
                                 


                                 C




                     E                         E'


                  D     A                   B     D'







                                 C'



ABC, ABC', CC'D, CC'D', ADE, BD'E' and DD'F are all E.L.T

Then EE'F is also E.L.T. One of them must have uniform color.
Newsgroups: soc.culture.china
From: zzuo@iastate.edu (Zhiqi Zuo)
Subject: Re: An Old Arithmatic Problem
Organization: Iowa State University, Ames, IA
Date: Thu, 17 Dec 1992 18:57:13 GMT

In article <BzEyK1.4Ds@cs.psu.edu> wang@math.psu.edu writes:
>In article Cvr@news.iastate.edu, zzuo@iastate.edu (Zhiqi Zuo) writes:
>>>>>Easy, hum? A table has four corners, cut one corner and how many left?
>>                                        ^^^^^^^^^^^^^^              ^^^^ 
>>                                                            not "still have"

How do you understand this "left"? There are two ways?

>>
>>>>>I feel like 5-year-old now!
>>>>
>>>>Either 5 or 3, depends on how large the cut is..
>>>>(everybody in china knows this riddle)
>>>>
>>>>NW
>>>
>>>4 is also possible.
>>           ????????
>>>(We are all assuming the cut is a straight line ....)
>>
>>
>>
>
>
>
>Consider a square table.
>If the cut line intersects at the middle of two adjacent sides,
>the remaining shape has 5 corners;
>If the cut line passes through exactly one vertex of the square,
>the remaining shape has 4 corners;
                          ^ or 5

I see(you cut part of another corner!)

>If the cut line passes through two vertices, i.e. it's a diagonal,
>3 corners left.
Organization: Penn State University
Date: Wed, 16 Dec 1992 23:29:29 EST
From: <XXX100@psuvm.psu.edu>
Newsgroups: soc.culture.china
Subject: Re: An Old Arithmatic Problem
 <1992Dec16.194437.14870@risky.ecs.umass.edu>
 <1992Dec16.224410.18421@risky.ecs.umass.edu>

From: mirsip@risky.ecs.umass.edu (Ivan Popstefanija)
Subject: Re: An Old Arithmatic Problem
Organization: University of Massachusetts, Amherst

In article <1992Dec16.194437.14870@risky.ecs.umass.edu>
mirsip@risky.ecs.umass.edu (Ivan Popstefanija) writes:
>In article <15DEC199202400198@utkvx2.utk.edu> xic@utkvx2.utk.edu (Chen, Xi)
writes:
>>Well, the following is an old arithmatic problem, not mathematic problem.
>>
>>Do you know a poker game called 24 points?  If you know it, you know the
>>rule.  There are four cards, 5, 5, 5 and 1.  Find an arithmatic expression
>>using all the number once and only once to get 24.
>
>5*(5-1/5)
>
>Good day!

           Good.
           Let's try something funny.
           4 cards : 1  1  3  3
Newsgroups: soc.culture.china
From: yu@physun.physics.mcmaster.ca (Fan Yu)
Subject: Re: a math problem for those who want to challenge china's math champion
Organization: Dept. of Physics & Astronomy, McMaster University
Date: Mon, 14 Dec 1992 19:03:45 GMT

In article <00965125.C67B2F40@Msu.oscs.montana.edu> uphhswh@Msu.oscs.montana.edu writes:
>this is one of the 6 problems in the final contest of national math contest of
>1986.
>a plane is filled with any way by either black or white points. Prove that:
							 ^^^^^^
>there must exist one equi-lateral triangle whose 3 vertex are same color.

The question is just bullshit. Let me ask you a question: if the plane is
filled with these points, what color is the plane? (hint: calculate the
reflectivity as a function of frequency and black dots filling fraction)

Answer: Hash brown.

This question is one of the toughest in the Federation of Stars physics 
Olympiad 2020.

FY
Newsgroups: soc.culture.china
From: zliao@engin.umich.edu (Canhai Lai)
Subject: gif, girl picture, ftp side, etc.
Date: Sat, 12 Dec 92 14:17:54 EST
Organization: University of Michigan Engineering, Ann Arbor
Distribution: usa

 ftp side  wuarchive.wustl.edu has many gif graphics
under graphics/gif directory.

 00Index.920903 is the latest index you need.

 For the pretty lady, The best I have ever seen
are these three:
  babe01, babe20, swim85. 

 Unfortunately, they are all westerner. I have been tried
to search for pretty Chinese girls picture, but so far,
there aren't many Chinese under the archive. The best one
I saw may be the one posted days before(girl3), which is named
'mystery' under wuarchive.

 I wonder if someone can tell us a few more ftp sides which have
more pretty Chinese ladies. Having Other Oriental girls is fine,
but I prefer Chinese girls to Japanese ones.

 Thanks!
Newsgroups: soc.culture.china
From: dwong@chopsuey.pico ( paganini's admirer )
Subject: Re: What is Mathematics (Was Re: a math problem for those who ...)
Reply-To: dwong@chopsuey.pico
Organization: Sun Microsystems
Date: Thu, 17 Dec 1992 21:09:28 GMT

Not very easy to define? 

But we all know what pain-in-the-neck a mathematician can be. :-)



David W.
From: zzhang@soliton.rutgers.edu (ZhiZhong Zhang)
Newsgroups: soc.culture.china
Subject: Re: a math problem for those who want to challenge china's math champion
Date: 14 Dec 92 23:09:04 GMT
Organization: Rutgers Univ., New Brunswick, N.J.

uphhswh@Msu.oscs.montana.edu writes:

>this is one of the 6 problems in the final contest of national math contest of
>1986.
>a plane is filled with any way by either black or white points. Prove that:
>there must exist one equi-lateral triangle whose 3 vertex are same color.

The question doesn't seem clear to me. 
1) Does a "point" have a size? If it does, what shape does it have(I 
would assume circle)?
2) If a "point" does not have a size(size infinitsimal), how can you filled 
a plane with "points"?

By the way, I enjoyed the recent topics in mathematics. 
ZZZ
From: hxie@dps91a.cis.upenn.edu
Newsgroups: soc.culture.china
Subject: Re: Riddles, any takes?  Was: Puzzles & picutures
Date: 20 Dec 92 18:14:09 GMT

In article <PWU.92Dec18172621@vernazza.ai.mit.edu>, pwu@ai.mit.edu (Peng Wu) writes:
 
|> Ok, tired of puzzles?  Here are some riddles:

Let me try my luck.
 
|> What can run but can't walk?
 
Any machine.

|> Why does a pencil seem heavy when you write with it for a long time?

Its writing is thicker and it needs to be cut.
 
|> What time is the same when you spelled backwards?

Noon.
 
|> Who was the first to have a mobile home?

An unborn baby.
 
|> What helps keep your teeth together?

My mouth.
 
|> Why should you never tell secrets in a garden?

Secrets flow easily because there are so many flowers.
    
|>     -- A childish poster

(signature omitted)

Why should you never provide your name when you solve
other's problems?
Xref: sparky soc.culture.china:33017 soc.culture.taiwan:16272 soc.culture.hongkong:16447
From: v999rke8@ubvmsd.cc.buffalo.edu
Newsgroups: soc.culture.china,soc.culture.taiwan,soc.culture.hongkong
Subject: Re: Is Hong Kong people Chinese? (Was: Re: Is Taiwanese CHinese?)
Date: 17 Dec 92 20:21:00 GMT
Distribution: na
Organization: University at Buffalo
News-Software: VAX/VMS VNEWS 1.41

I am not a "stupid CCP supporter", But I still have a very stupid question
to ask:

If you TIers don't think you are Chinese, why do you keep posting so many 
offensive articles in this soc.culture.china news group? 

Taiwanese is not Chinese if China and Taiwan are two different countries. 
Unfortunately to those TIers, although there is two governments, there is 
only one country. 

Remember the old story "White horse is not a horse"? This is logic of TIers. 
If this is true, one can argue that TIers is not Taiwanese.


Hsi
Newsgroups: soc.culture.china
From: yu@physun.physics.mcmaster.ca (Fan Yu)
Subject: Re: about that explosion in the microwave
Organization: Dept. of Physics & Astronomy, McMaster University
Date: Fri, 18 Dec 1992 02:23:13 GMT

In article <92352.194941XXX100@psuvm.psu.edu> <XXX100@psuvm.psu.edu> writes:
> >
> >I once was warming up a boiled egg in the microwave and it exploded.
> >The sound was, boy, frightening. When I started to use microwave I
>
>        I would be surprised if a little bird was
>        getting out of it.

I would, too. Did I say "boiled", or should I say "cooked"?

> >put everything in an aluminum foil, and I got away countless times
> >without problem. Then came one day a flash and an explosion, some
> >part of the foil melted. That was when the electromagnetic theory
> >I learnt came to me.
>
>        Did you try to probe your waveguide in it
>        and enjoy some fantacy?

Why should I? I have better things to eat, and better fantacies to dream.:-)

FY
Newsgroups: soc.culture.china
From: lui@blitzen.cc.bellcore.com (lui,alex)
Subject: Re: a fun problem
Organization: Bellcore, Livingston, NJ
Date: Thu, 17 Dec 92 15:10:09 GMT

In article <BzDMFr.Ayy@news.iastate.edu> zzuo@iastate.edu (Zhiqi Zuo) writes:
>In article <850@blue.cis.pitt.edu> yding+@pitt.edu (Yijun Ding) writes:
>>In article <1992Dec16.175720.9520@ee.rochester.edu> yao@ee.rochester.edu (Meng Yao) writes:
>>
>>I guess my mail trashed. The answer is bit too complicated to state, but
>>here goes (just try to be high school kid again):
>>
>>put 4 balls on each sides:
>>if( 4 = 4 )  /* all 8 balls are good balls */
>>  put 3 from remain ones against 3 good balls
>>  if( 3 = 3) weigh one of remain two with a good one.
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
What if it still balances?  Then, you know the last ball is the bad ball,
but you don't know whether it's heavier or lighter, and you've used up
your 3 weights.

>>  if( xxx > 3 good balls)  /* the bad ball is heavy */
>>    take 2 from the heavys.
>>    if( x = x) the remain one is bad, and is heavy
>>    if( x > x) the heavier is bad
>>  else if(xxx < 3) ... same
>>else if(xxxx > oooo)  /* the remain 5 are good, x=heavy o=light */
>>weigh (xxxoo against the 5 good ball)
>>if( 5 = 5) /* the question balls are xoo */
>>  if( xo = 2 good balls) the remain o is bad
>>  if(xo > 2 good balls) the x is bad
>>  if(xo < 2...) the o is bad
>>if( xxxoo > 5 good balls)  /* the bad is in xxx */
>>  if(x = x)... same as before
>>if( xxxoo < 5 good balls) /* the bad is in oo */
>>  ... obvious.
>>
>>All except one case, we not only can find the bad ball, but tell if 
>>it is heavy or light.
>>

True, but then it's not a solution now, is it?  If I recall the problem
correctly, the objective is to identify the bad ball and also determine 
whether it's heavier or lighter using only 3 weighings.

>>-- 
>>//Yijun Ding, Pittsburgh //Go your way, be happy.
>
>A Very impressive solution!
                   ^^^^^^^^

NOT!  But a good effort nonetheless.  I am pretty sure that this problem as
it's stated cannot be solved, and that one can prove it using information
theory (and most likely with other techniques as well).  I remember 
encountering this problem to prove that it can be done w/ 12 balls but 
not w/ 13.  Will someone like to present a proof to this? :-)

-Alex


Newsgroups: soc.culture.china
From: yu@physun.physics.mcmaster.ca (Fan Yu)
Subject: Re: Where did the $1 go?
Organization: Dept. of Physics & Astronomy, McMaster University
Date: Wed, 16 Dec 1992 02:15:18 GMT

In article <Dec.15.15.30.55.1992.6359@soliton.rutgers.edu> zzhang@soliton.rutgers.edu (ZhiZhong Zhang) writes:
>Again this is NOT a math or phys problem. The purpose of it is only to
>entertain. I apologize if you heard this before. 
>
>Here we go. Three friends shared one room in a hotel. They paid $30 for 
>the room when they checked in. When they were leaving, 
>however, the manager realized that they should only have to pay $25. So the
>manager asked a waiter to pay them back the $5. But the waiter is greedy,
>so he gave each person only $1 and he kept the $2. Now, the problem, each
>person spent $9, the waiter kept $2, therefore the total is 3*9+2=29. It
>is $1 short. Where did the $1 go?

You could also ask, if the porter kept the 5 bucks, then the total would
be 30+5=35 dollars. Where did the extra five bucks come from?

FY

Newsgroups: soc.culture.china,soc.culture.taiwan,soc.culture.hongkong