Eshim Murotovich Mardonov, Kurbon Ostanov, Achilov U. About teaching students to methods of solving problems by combinator. ijemd [Internet]. 2019Nov.18 [cited 2024May22];8:10.21070/ijemd.v8i0.271. Available from: https://ijemd.umsida.ac.id/index.php/ijemd/article/view/271