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 Forum index » PEN Problems » D. Rational Numbers
D. Rational Numbers
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[Vvp, pp. 40]
  Peter    5    2741    Sat Dec 15, 2007 11:29 pm 
me@home View latest post
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CRUX, Problem 1632, Stanley Rabinowitz
  Peter    7    2591    Sat Feb 14, 2009 8:38 am 
hxy09 View latest post
 No new posts Note 3  
IMO ShortList 1991 P19 (IRE 5)
  Peter    2    1980    Fri Aug 15, 2008 12:59 pm 
orl View latest post
 No new posts Note 4  
IMO Long List 1967 P20 (DDR)
  Peter    1    2539    Wed Aug 29, 2007 9:18 pm 
Peter View latest post
 No new posts Note 5  
Austria 2002
  Peter    2    1514    Mon Dec 24, 2012 1:22 am 
jordan View latest post
 No new posts Note 6  
Romania 2001, Marius Ghergu
  Peter    2    1626    Sat Feb 21, 2009 6:59 pm 
ntfiblov View latest post
 No new posts Note 7  
IMO Long List 1967 (GB)
  Peter    1    1302    Wed Aug 29, 2007 10:26 pm 
Peter View latest post
 No new posts Note 8  
Poland 2002
  Peter    2    1636    Wed Apr 30, 2008 7:53 pm 
bozzball View latest post
 No new posts Note 9  
IMO Short List 1999
  Peter    1    1393    Sun Feb 18, 2007 10:49 pm 
tim1234133 View latest post
 No new posts Note 10  
Berkeley Math Circle Monthly Contest 1999-2000
  Peter    1    1381    Wed Aug 29, 2007 10:04 pm 
Peter View latest post
 No new posts Note 11  
Iran 1998
  Peter    1    1367    Wed Aug 29, 2007 10:09 pm 
Peter View latest post
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[Zh, PP. 40] Mediterranean MC 1999 (Proposed by Ukraine)
  Peter    3    2039    Tue Sep 11, 2007 4:46 pm 
ideahitme View latest post
 No new posts Note 13  
[PbAw, pp. 2]
  Peter    4    2223    Wed Feb 28, 2007 8:57 pm 
juna View latest post
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[EbMk, pp. 23]
  Peter    1    1414    Sat Feb 24, 2007 4:53 am 
Hawk Tiger View latest post
 No new posts Note 15  
China TST 2006
  Peter    0    253    Mon Feb 12, 2007 2:04 pm 
Peter View latest post
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(A. Mirotin) Belarus 2002
  Peter    2    1762    Thu Aug 30, 2007 2:31 pm 
ideahitme View latest post
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(V. Bernik) Belarus 2001
  Peter    2    1551    Thu Aug 30, 2007 2:33 pm 
ideahitme View latest post
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Putnam 1980
  Peter    2    1591    Thu Aug 30, 2007 3:53 am 
ideahitme View latest post
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CRUX(No. 7, Volume 25, 1999), Problem A240, Mohammed Aassila
  Peter    2    1593    Thu Aug 30, 2007 2:43 pm 
ideahitme View latest post
 No new posts Note 20     Peter    2    1487    Thu Aug 30, 2007 3:53 am 
ideahitme View latest post
 No new posts Note 21     Peter    4    2089    Sun Dec 23, 2007 1:42 pm 
PhilAndrew View latest post
 No new posts Note 22     Peter    2    1630    Sat Feb 24, 2007 11:53 am 
ZetaX View latest post
 No new posts Note 23     Peter    2    1466    Sun Dec 23, 2007 2:28 pm 
ZetaX View latest post
 No new posts Note 24     Peter    4    1641    Wed Aug 13, 2008 7:33 pm 
Kouichi Nakagawa View latest post
 No new posts Note 25  
CRUX(No. 1. Vol. 24, 1998), Problem 2305, Richard I. Hess
  Peter    2    1487    Thu Aug 30, 2007 3:03 pm 
Peter View latest post
 No new posts Note 26  
AMM, Problem 10630, Richard Strong
  Peter    1    1311    Thu Aug 30, 2007 3:57 am 
ideahitme View latest post
 No new posts Note 27     Peter    1    1276    Thu Aug 30, 2007 2:47 pm 
ideahitme View latest post
 No new posts Note 28  
[KhKw, pp. 11]
  Peter    2    1379    Thu Mar 13, 2008 5:02 pm 
Kabor Suk View latest post
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[AI, pp. 116] For a proof, See [KaMr].
  Peter    2    1671    Fri Mar 06, 2009 4:44 am 
zin View latest post
 No new posts Note 30  
APMO 1994/5
  Peter    1    1263    Tue Mar 13, 2007 2:30 pm 
ZetaX View latest post
 No new posts Note 31     Peter    3    1803    Fri Mar 14, 2008 9:22 pm 
Kabor Suk View latest post
 No new posts Note 32  
Putnam 1995/B6
  Peter    1    1285    Wed Aug 29, 2007 10:51 pm 
Peter View latest post
 No new posts Note 33     Peter    0    1080    Mon Feb 12, 2007 2:04 pm 
Peter View latest post
 No new posts Note 34     Peter    3    1703    Thu Jan 24, 2008 6:23 am 
jmerry View latest post
 No new posts Note 35  
MM, Problem 1385, Howard Morris
  Peter    1    1273    Thu Mar 13, 2008 6:32 pm 
Kabor Suk View latest post
 No new posts Note 36  
[Ae, pp. 226]
  Peter    2    1500    Sun Jul 27, 2008 6:02 pm 
tjhance View latest post
 No new posts Note 37  
[PeJs, pp. 95]
  Peter    1    1347    Wed Jan 02, 2008 12:02 pm 
Yuriy Solovyov View latest post
 No new posts Note 38  
(N. Agahanov) [PeJs, pp. 99]
  Peter    1    1270    Tue Feb 20, 2007 7:39 pm 
Megus View latest post
 No new posts Note 39  
[PbAw, pp. 2]
  Peter    5    1797    Wed Jul 21, 2010 4:07 pm 
persya View latest post
 No new posts Note 40  
[Ams, pp. 14]
  Peter    2    1711    Thu May 01, 2008 6:57 pm 
bozzball View latest post
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