What is the definition of a sequence in mathematics?

A sequence in mathematics is defined as an ordered list of numbers, meaning that the elements in a sequence are arranged in a specific order. Each number in the sequence is called a term, and the position of each term is significant, as it contributes to the overall structure of the sequence. For example, in the sequence 2, 4, 6, 8, each number has a defined place and relationship with the others, which distinguishes it from other mathematical constructs like sets, where the order does not matter. This is why an ordered list of numbers accurately captures the concept of a sequence, making it the correct choice. Through sequences, mathematicians can analyze patterns, series, and relationships that hinge on the specific arrangement of numbers, thereby enabling deeper insights into mathematical concepts.