ERKABOYEVA ZAVRA; ESHBEKOV RAYKHONBEK. SIMPLE WAYS TO DIFFERENTIATE BETWEEN PERMUTATIONS AND COMBINATIONS IN COMBINATORICS. JournalNX - A Multidisciplinary Peer Reviewed Journal, [S. l.], p. 433–435, 2021. Disponível em: https://repo.journalnx.com/index.php/nx/article/view/1583. Acesso em: 10 jan. 2025.