A sequence is a set of numbers arranged in a definite pattern. Each number is called a term.
A finite sequence is one that has a last term when listed. For Example: 2,4,6,8,,…,16. An infinite sequence is one that does not have a last term when listed.
Arithmetic Progression follows the rule of linear sequence which is the sequence in which each term is obtained by adding a distant number (Positive or Negative) to the proceeding terms.
The constant number is called common difference and it is denoted as “d” while the first term is denoted as “a”.
If T1, T2, T3, T4, T5, … is a linear sequence, the common difference is obtained as: