English

Arithmetic Sequence

How to find the nth term of an arithmetic sequence: definition, formula, 3 examples, and their solutions.

Definition

Formula

Example1, 4, 7, 10, 13, ..., an = ?

Example-2, 5, 12, 19, ..., ak = 551, k = ?

Examplea8 = 5, a12 = 13, an = ?