ANALISIS PEMAHAMAN KONSEP PERMUTASI DAN KOMBINASI PADA MAHASISWA SEMESTER V PENDIDIKAN MATEMATIKA UNIVERSITAS ASAHAN. JOURNAL OF SCIENCE AND SOCIAL RESEARCH, [S. l.], v. 9, n. 1, p. 828–833, 2026. DOI: 10.54314/jssr.v9i1.5719. Disponível em: https://jurnal.goretanpena.com/index.php/JSSR/article/view/5719.. Acesso em: 3 may. 2026.