👉 In mathematics, a sequence is defined as an ordered list of numbers. Sequences are characterized by their length and order in which they appear. They can be finite (where each number appears only once) or infinite (where each number may repeat). A sequence is also known as a series. For example, consider the sequence 1, 2, 3, 4, 5. This sequence can be defined as: 1 2 3 4 5 Where each element