{"id":26221,"date":"2025-12-14T22:56:14","date_gmt":"2025-12-14T19:56:14","guid":{"rendered":"https:\/\/w3.bilkent.edu.tr\/en\/?page_id=26221"},"modified":"2026-01-21T20:35:49","modified_gmt":"2026-01-21T17:35:49","slug":"problem-of-the-month-december-2025","status":"publish","type":"page","link":"https:\/\/w3.bilkent.edu.tr\/en\/problem-of-the-month-december-2025\/","title":{"rendered":"Problem of the Month \u2013 December 2025"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-26222\" src=\"https:\/\/w3.bilkent.edu.tr\/en\/wp-content\/uploads\/2025\/12\/p-of-the-m-Dec-2025.png\" alt=\"\" width=\"811\" height=\"143\" srcset=\"https:\/\/w3.bilkent.edu.tr\/en\/wp-content\/uploads\/2025\/12\/p-of-the-m-Dec-2025.png 900w, https:\/\/w3.bilkent.edu.tr\/en\/wp-content\/uploads\/2025\/12\/p-of-the-m-Dec-2025-300x53.png 300w, https:\/\/w3.bilkent.edu.tr\/en\/wp-content\/uploads\/2025\/12\/p-of-the-m-Dec-2025-311x55.png 311w, https:\/\/w3.bilkent.edu.tr\/en\/wp-content\/uploads\/2025\/12\/p-of-the-m-Dec-2025-800x141.png 800w, https:\/\/w3.bilkent.edu.tr\/en\/wp-content\/uploads\/2025\/12\/p-of-the-m-Dec-2025-580x102.png 580w\" sizes=\"auto, (max-width: 811px) 100vw, 811px\" \/><\/p>\n<p>&nbsp;<\/p>\n<p><strong>Correct Solutions by,<\/strong><\/p>\n<ul>\n<li>Mehmet Sarak Bilkent University<\/li>\n<li>\u00c7a\u011fr\u0131 Mara\u015fl\u0131 Ankara \u00d6zel Y\u0131ld\u0131z S\u0131nav Ortaokulu<\/li>\n<li>Ali Kerem Arma\u011fan B\u00fcy\u00fck Ba\u015far\u0131 Koleji, Isparta<\/li>\n<li>\u00d6zg\u00fcr Soysal Bilkent University<\/li>\n<li>Albert Stadler Herrliberg, Switzerland<\/li>\n<li>Cuma G\u00fcng\u00f6r\u00fc Malatya<\/li>\n<li>Emre \u00d6zer TED Ankara Koleji<\/li>\n<li>\u00c7\u0131nar \u00d6zdemir Bilkent University<\/li>\n<li>Mustafa Kaynak Gaziantep<\/li>\n<li>Ahmet Y\u00fcksel Ayd\u0131n<\/li>\n<li>Damla \u00dcrey Aziz Sancar Fen Lisesi, Ankara<\/li>\n<li>Hari Kishan D.N. College Meerut, India<\/li>\n<li>Ahmed Said Y\u0131ld\u0131z \u0130brahim-S\u00fcheyla \u0130zmirli Fen Lisesi, Zonguldak<\/li>\n<li>Toshihiro Shimizu Kawasaki, Japan<\/li>\n<li>Abdulkadir Tanr\u0131verdi Eski\u015fehir<\/li>\n<li>Eren Cengiz Konya<\/li>\n<li>Utkan Topalo\u011flu Bilkent University<\/li>\n<li>Hasan Z\u00fcbeyr Demir Ankara<\/li>\n<li>Emre Oktay Yan\u0131k<\/li>\n<li>Tamer T\u00fcrko\u011flu<\/li>\n<li>Levent Ko\u00e7alan<\/li>\n<li>Alperen Ery\u0131lmaz \u0130zmir Atat\u00fcrk Lisesi<\/li>\n<li>Khaled Halaoua Higher Inst. of Appl. Sci. Tech., Damascus, Syria<\/li>\n<li>Giray Bar\u0131\u015f \u015eahin Kabata\u015f Erkek Lisesi, \u0130stanbul<\/li>\n<li>Magnus Jakobsson Lund, Sweden<\/li>\n<li>J\u00fcrgen Weith University of Applied Sciences W\u00fcrzburg-Schweinfurt, Germany<\/li>\n<li>Emir Kara Gazi Anadolu Lisesi, Ankara<\/li>\n<li>Roger Bengtsson Lund, Sweden<\/li>\n<li>Arda Karahan Trabzon Fen Lisesi<\/li>\n<li>Alper Balc\u0131 Ohio State University, USA<\/li>\n<li>Vedat Deveci \u0130stanbul<\/li>\n<li>Recep G\u00f6kdereli Alev Alatl\u0131 Anadolu Lisesi, \u0130stanbul<\/li>\n<li>\u0130smail Toy TOBB ET\u00dc<\/li>\n<\/ul>\n<p><strong>Solution:\u00a0<a href=\"https:\/\/math.bilkent.edu.tr\/Problem\/2512a.pdf\">https:\/\/math.bilkent.edu.tr\/Problem\/2512a.pdf<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&nbsp; Correct Solutions by, Mehmet Sarak Bilkent University \u00c7a\u011fr\u0131 Mara\u015fl\u0131 Ankara \u00d6zel Y\u0131ld\u0131z S\u0131nav Ortaokulu Ali Kerem Arma\u011fan B\u00fcy\u00fck Ba\u015far\u0131 Koleji, Isparta \u00d6zg\u00fcr Soysal Bilkent University Albert Stadler Herrliberg, Switzerland Cuma G\u00fcng\u00f6r\u00fc Malatya Emre \u00d6zer TED Ankara Koleji \u00c7\u0131nar \u00d6zdemir Bilkent University Mustafa Kaynak Gaziantep Ahmet Y\u00fcksel Ayd\u0131n Damla \u00dcrey [\u2026] <\/p>\n<div class=\"clear\"><\/div>\n<p><a class=\"more_link clearfix\" href=\"https:\/\/w3.bilkent.edu.tr\/en\/problem-of-the-month-december-2025\/\" rel=\"nofollow\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-26221","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/pages\/26221","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/comments?post=26221"}],"version-history":[{"count":3,"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/pages\/26221\/revisions"}],"predecessor-version":[{"id":26530,"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/pages\/26221\/revisions\/26530"}],"wp:attachment":[{"href":"https:\/\/w3.bilkent.edu.tr\/en\/wp-json\/wp\/v2\/media?parent=26221"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}