👉 In computer science, a duplicate is an element that appears more than once in a list or set. For example, if you have a list of numbers and you want to remove duplicates (i.e., elements that appear only once), you can use Python's set data structure to automatically eliminate the duplicates: ```python numbers = [1, 2, 3, 4, 5, 6] unique_numbers = list(set(numbers)) print(unique_numbers) # Output: [1