MOBILE-BASED ONLINE EXAM APPLICATIONS USING PROBLEM WEIGHT CLASSIFICATION TECHNIQUES, GROUPING AND RANDOMIZING: Aplikasi Ujian Online Berbasis Mobile Menggunakan Teknik Klasifikasi Bobot Soal, Pengelompokan Dan Pengacakan. techno [Internet]. 2020 Mar. 19 [cited 2026 Feb. 12];17(1):43-50. Available from: https://ejournal.nusamandiri.ac.id/ejurnal/index.php/techno/article/view/1229