Sequences

A sequence is a set of numbers arranged in a particular order. The simplest sequence is the sequence of natural numbers(counting numbers).

1, 2, 3, 4, 5, …

Other simple sequence are:

2, 4, 6, 8, …   (even numbers)

1, 3, 5, 7, …   (odd numbers)

-1, -2, -3, -4, …   (negative integers) 

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