User contributions
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- 00:26, 17 March 2020 (diff | hist) . . (+3,048) . . 1989 IMO Problems/Problem 1 (→Problem) (current)
- 00:05, 17 March 2020 (diff | hist) . . (+15) . . 1989 IMO Problems/Problem 1
- 00:01, 17 March 2020 (diff | hist) . . (+283) . . N 1989 IMO Problems/Problem 1 (Created page with "Prove that in the set <math> \{1,2, \ldots, 1989\}</math> can be expressed as the disjoint union of subsets <math> A_i, \{i = 1,2, \ldots, 117\}</math> such that i.) each <ma...")
- 13:48, 15 March 2020 (diff | hist) . . (+18) . . 1988 IMO Problems/Problem 2 (→Solution)
- 01:28, 15 March 2020 (diff | hist) . . (+10) . . 1988 IMO Problems/Problem 2 (→Solution)
- 01:24, 15 March 2020 (diff | hist) . . (+2,702) . . 1988 IMO Problems/Problem 2
- 19:40, 2 February 2019 (diff | hist) . . (+2,122) . . N 2018 JBMO Problems/Problem 4 (Created page with "== Problem == Let <math>\triangle ABC</math> and <math>A'</math>,<math>B'</math>,<math>C'</math> the symmetrics of vertex over opposite sides.The intersection of the circumci...") (current)
- 18:51, 2 February 2019 (diff | hist) . . (+559) . . N 2018 JBMO (Created page with "'''2018 JBMO''' problems and solutions. The 22nd JBMO was held in Rhodes, Hellas on 19-24 June 2018. * 2018 JBMO Problems * Problem 1 *...") (current)
- 18:49, 2 February 2019 (diff | hist) . . (+77) . . Junior Balkan Mathematical Olympiad
- 21:49, 18 January 2019 (diff | hist) . . (+1,195) . . N 2013 JBMO Problems/Problem 1 (Created page with "==Problem== Find all ordered pairs <math>(a,b)</math> of positive integers for which the numbers <math>\dfrac{a^3b-1}{a+1}</math> and <math>\dfrac{b^3a+1}{b-1}</math> are bot...")
- 21:11, 18 January 2019 (diff | hist) . . (+550) . . N 2013 JBMO (Created page with "'''2013 JBMO''' problems and solutions. The 17th JBMO was held in Antalya, Turkey in June, 2013. * 2013 JBMO Problems * Problem 1 * 2...") (current)
- 00:22, 3 January 2019 (diff | hist) . . (+1,610) . . N 2008 JBMO Problems/Problem 3 (Created page with "==Problem== Find all prime numbers <math> p,q,r</math>, such that <math> \frac{p}{q}-\frac{4}{r+1}=1</math> == Solution == The given equation can be rearranged into the be...")
- 00:06, 3 January 2019 (diff | hist) . . (+550) . . N 2008 JBMO (Created page with "'''2008 JBMO''' problems and solutions. The 12th JBMO was held in Vlorë, Albania in June, 2008. * 2008 JBMO Problems * Problem 1 * 2...") (current)
- 11:16, 31 December 2018 (diff | hist) . . (+2,700) . . N 2006 JBMO Problems/Problem 4 (Created page with "==Problem== Consider a <math>2n \times 2n</math> board. From the <math>i</math>th line we remove the central <math>2(i-1)</math> unit squares. What is the maximal number of r...") (current)
- 23:11, 26 December 2018 (diff | hist) . . (+1) . . 2006 JBMO Problems/Problem 1
- 23:10, 26 December 2018 (diff | hist) . . (-1) . . 2006 JBMO Problems/Problem 1
- 23:04, 26 December 2018 (diff | hist) . . (+42) . . 2006 JBMO Problems/Problem 1
- 23:02, 26 December 2018 (diff | hist) . . (-4) . . 2006 JBMO Problems/Problem 1
- 22:58, 26 December 2018 (diff | hist) . . (+1,273) . . N 2006 JBMO Problems/Problem 1 (Created page with "==Problem== If <math>n>4</math> is a composite number, then <math>2n</math> divides <math>(n-1)!</math>. == Solution == We shall prove a more stronger result that <math>4n...")
- 22:44, 26 December 2018 (diff | hist) . . (+558) . . N 2006 JBMO (Created page with "'''2006 JBMO''' problems and solutions. The 10th JBMO was held in Chişinău, Moldova in 2006. * 2006 JBMO Problems ** Problem 1 ** 2...") (current)
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