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• Junior Balkan Mathematical Olympiad
  ...piad''' ('''JBMO''') is an annual contest for students under the age of 15.5 from one of the [[#Member countries|member countries]] (Balkan area). In re ...ficulty=4 - 6|breakdown=<u>Problem 1</u>: 4<br><u>Problem 2/3</u>: 5<br><u>Problem 4</u>: 6}}
  3 KB (472 words) - 18:49, 2 February 2019
• JBMO Problems and Solutions, with authors
  ...s the authors of the problems of the [[Junior Balkan Mathematical Olympiad|JBMO]]. * [[1997 JBMO]]
  6 KB (524 words) - 17:17, 17 August 2018
• 1997 JBMO Problems
  ==Problem 1== [[1997 JBMO Problems/Problem 1#Solution|Solution]]
  2 KB (245 words) - 22:44, 14 September 2023
• 1997 JBMO
  '''1997 JBMO''' problems and solutions. The 1st JBMO was held in Belgrade, Yugoslavia in 1997. * [[1997 JBMO Problems]]
  596 bytes (61 words) - 16:10, 17 September 2017
• 1997 JBMO Problems/Problem 5
  == Problem == ...sitive integers such that <cmath> n_1^2 + n_2^2 + \cdots + n_{1997}^2 = n_{1998}^2. </cmath> Show that at least two of the numbers are even.
  2 KB (293 words) - 21:12, 7 August 2018
• 1998 JBMO Problems
  ==Problem 1== ...}_{1997}\underbrace{22\ldots 22}_{1998}5</math> (which has 1997 of 1-s and 1998 of 2-s) is a perfect square.
  933 bytes (131 words) - 20:10, 31 October 2020
• 1998 JBMO Problems/Problem 1
  ==Problem== ...}_{1997}\underbrace{22\ldots 22}_{1998}5</math> (which has 1997 of 1-s and 1998 of 2-s) is a perfect square.
  1 KB (134 words) - 22:37, 14 August 2018
• 1999 JBMO Problems
  ==Problem 1== [[1999 JBMO Problems/Problem 1|Solution]]
  2 KB (271 words) - 13:13, 25 August 2018