• A *sequence* is a set of numbers called terms, which are arranged in a succession in which there is a relationship or rule between each successive number.

• A sequence can be finite or infinite. A *finite sequence* has a last term, and an *infinite sequence* has no last term.

• The following is an example of a finite sequence:

{3, 6, 9, 12, 15, 18}

In this sequence, each number has a value of 3 more than the preceding number.

• The following is an example ...

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