What is a number series in math?
A number sequence is an ordered set of numbers. There may be a simple or complicated rule defining the sequence or it may be purely random.If a1, a2, a3, ... is a number sequence, then defineS1 = a1,S2 = a1 + a2,S3 = a1 + a2 + a3,...Sn = a1 + a2 + a3 + ... + an , etcthen Sn is a number series.