Erkaboyeva Zavra and Eshbekov Raykhonbek (2021) “SIMPLE WAYS TO DIFFERENTIATE BETWEEN PERMUTATIONS AND COMBINATIONS IN COMBINATORICS”, JournalNX - A Multidisciplinary Peer Reviewed Journal, pp. 433–435. Available at: https://repo.journalnx.com/index.php/nx/article/view/1583 (Accessed: 10January2025).