👉 Permutations are a type of arrangement of objects, where order matters. In other words, when arranging items in a sequence or collection without regard to their original order, you get a permutation. For example, if you have a set of 10 unique items and want to arrange them in a specific order (e.g., "AAAABBBCCD"), then the number of permutations is 10! (which equals 3628800) because there are 1
