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imo-problems · Discussion on IMO-level math problems

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  • Members: 350
  • Category: Mathematics
  • Founded: Jul 20, 2000
  • Language: English
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Messages 1992 - 2021 of 2021   Oldest  |  < Older  |  Newer >  |  Newest
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1992 Daniel Hernandez
danielhdez2718 Offline Send Email
Mar 15, 2005
7:19 am
Can somebody tell me where to find problems from the Chinese mathemathical olympiad? Daniel ... [Non-text portions of this message have been removed]...
1993 Dibyendu
dibyenduc123 Offline Send Email
Mar 16, 2005
1:43 pm
Respected Members, Please throw some light on the following problem: Suppose I have 2401 sets and there are 30 numbers in each set, and...
1994 Orcun YAMAN
yamanorcun Offline Send Email
Mar 20, 2005
10:12 pm
Dear Colleague- The 9th issue (Volume 4, Number 1) of the Rural Mathematics Educator has just been published at ...
1995 m_a_t_i_c Offline Send Email Mar 25, 2005
10:06 am
Dear group members, "The IMO Compendium", a book with all preserved shortlisted (with solutions) and longlisted problems will be published in the series ...
1996 mayurs21 Offline Send Email Mar 29, 2005
2:29 pm
Hi, I think it will show binomial distribution. A[Ci,Cj,k] = Clusters Ci and Cj have k elements in common. P(A[Ci,Cj,k]) = 1470Ck * ( k Ý Ci AND k Ý Cj)^k * ...
1997 basava
vcb359 Offline Send Email
Apr 27, 2005
11:54 am
I know it is a basic problem....someone please give me the solution for this problem.... X is 250m south of a hare. The hare start running in east direction. X...
1998 Alberto Monteiro
albmont Offline Send Email
Apr 27, 2005
2:19 pm
... No, this is not a basic problem _at all_! ... The real problem is that the orbit of the chaser X is _very_ complex, the result of solving a differential...
1999 D.rajesh
rajeshlearns... Offline Send Email
Apr 28, 2005
1:51 pm
hello, I think instead of specifying the distance, if thetimetaken tocatch 'T'is given then it becomes easy. in that case let v,u (constant) be the speeds of X...
2000 tito_zoulou Offline Send Email May 1, 2005
4:19 pm
Golden Number linked to 666 Formal Proof needed Hello, While working on my websites on 666 myth ( http://www.666myth.co.nr/ French= http://www.666mythe.co.nr/...
2001 Alberto Monteiro
albmont Offline Send Email
May 1, 2005
9:42 pm
... 666 is very funny. Almost everything can be linked to it :-) Since the Golden Number is also present everywhere, it's not a surprise that they are linked. ...
2002 Gerard Nathanael Adri...
adrianus_set... Offline Send Email
Aug 7, 2005
11:49 am
Hi, I am an engineering student in singapore. I have an option to elect some modules on number theory to satisfy my course requirement. Will number theory does...
2003 Anderson Brasil
abds314 Offline Send Email
Aug 9, 2005
2:05 am
All I can think of are applications related to computers: criptography and random number generation. Cordially, Anderson Brasil ... -- No virus found in this...
2004 Amin Khajehnejad
aminkh632003 Offline Send Email
Aug 9, 2005
10:30 am
hi actualy yes, as mentioned, in system engineering, coding problems, psuedorandom numbers generation and spread spectrum applications there are deals with...
2005 quantum_tech4 Offline Send Email Aug 25, 2005
4:02 pm
Hello friends This is to inform u that i have created a new group related to number theory and its applications. Anyone interested to join this group is ...
2006 Aditya Singh
quantum_tech4 Offline Send Email
Sep 17, 2005
3:53 pm
Hello Friends This to inform u that a new group on number theory had been created. Those of you who are interested in the topic may join the group. ...
2007 Aditya Singh
quantum_tech4 Offline Send Email
Sep 17, 2005
6:23 pm
Hello Friends I hope all of u may know about the new unmanned mission to the moon to be sent by india in 2007 - 2008. This to inform u that a new group on...
2008 con_ceive Offline Send Email Jun 4, 2006
6:24 pm
... well, for n<=6 it is trivial. But I don't know the proofs for the rest. maybe this helps: http://www.aimath.org/library/library.cgi? ...
2009 ihsanyÿfffffccel
ihsan_einstein Offline Send Email
Jun 9, 2006
1:09 pm
x+y+z=x*y*z=5,7 x,y,z=?(x,y,z reel numbers) (Turkey) ihsan __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail...
2010  
longran1989 Offline Send Email
Jun 10, 2006
11:09 am
The problem: x+y+z=x*y*z=5,what are x,y,z? It has no solution!! 27*x*y*z<=(x+y+z)^3=125,hence x*y*z<=125/27<5 ...
2011 felicianpreda Offline Send Email Jun 10, 2006
12:30 pm
... The solution is correctly for x,y,z > 0 , but x,y,z are real numbers....
2012 Xiao Yuanming
pesciym Offline Send Email
Jun 11, 2006
6:15 pm
there are infinite many solutions w.l.g. x>0,y<0,z<0 then y+z=5-x, y*z=5/x has a solution iff (5-x)^2>=20/x that is x(x-5)^2-20>=0, which holds when x is large...
2013 ralf_laue Offline Send Email Jun 23, 2006
8:37 am
MENTAL CALCULATION WORLD CUP 2006 ... (please forward this to people who could be interested in participation) The best mental calculators from all over the...
2014 ihsan
ihsan_einstein Offline Send Email
Jul 7, 2006
11:09 am
................................ I don't know this problem's solution....ihsan yücel Problem. ABC is a triangle , IBEI and ICDI are bisector IBEI=14root(6) ...
2015 Sonnet
sonnet_meta Offline Send Email
Jul 23, 2006
10:32 am
Hello everybody, My problem is the following: Let A be an arbitrary square 2N x 2N antisymmetric matrix (just A= (a_{ij}) then a_{ij} = - a_{ji} for...
2016 ronika_sarin Offline Send Email Aug 10, 2006
9:20 am
How many ways can 6 boys sit around a round table such that no two of them are together?...
2017 Boston Math
boston_math Offline Send Email
Jul 5, 2007
10:43 am
Hello, I had a question in numerical analysis. Any suggestions are greatly appreciated. (1) Given F(x) = 0, numerically find the roots. Essentially, split an...
2018 Thanki Prashant Dhire...
prashant_1608 Offline Send Email
Sep 15, 2007
4:01 pm
Specialized search engine for: Physics, maths and philosophy: http://contemplative-search.blogspot.com/ Billions of websites are available on the web and...
2019 Thanki Prashant Dhire...
prashant_1608 Offline Send Email
Sep 15, 2007
4:02 pm
Specialized search engine for: Physics, maths and philosophy: http://contemplative-search.blogspot.com/ Billions of websites are available on the web and...
2020 D.rajesh
rajeshlearns... Offline Send Email
Jun 16, 2008
6:57 pm
Hi all, here is an interesting problem which i came across in a real life project. Consider f(t) and its kth derivative fk(t). fk(t) is continous in (a,b) for...
2021 ZHOU Xing
kxzhou Offline Send Email
Jun 17, 2008
3:32 pm
not losing generosity, let's assume a = -1, b = 1 and t0=0. then a function meeting your requirement is: f(x) = power(abs(x), n-0.5) ... real life project. ...
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