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A sequence in which each term after the first is obtained by adding a fixed number to the previous term is an arithmetic sequence or arithmetic progression (AP). The fixed number that is added is the common difference. The sequence 3,7,11,15,19.....is an arithmetic sequence since each term after the first is obtained by adding 4 to the previous term.
A finite portion of an arithmetic progression is known as a finite arithmetic progress and the sum of a finite arithmetic progression is known as arithmetic series.
This chapter covers the following topics-
-introduction
-arithmetic progression
-Nth term of an AP
-sum of first N terms of an AP
-summary