Number series is a sequence of numbers which is framed, using a particular system/rule, in which the numbers are not in a specific order.
All we have to do is to find out the system/rule that a particular series is following and finding the number using that system/rule.
For Example : 3, 9, 27, 81 ?
It is Geometric series.
Each term is Multiplied by 3.
So , 81 x 3 = 243
There are Six different types of number series that are mentioned below:
Perfect square series:-Consists of a set of numbers that are perfect squares.
Perfect cube series: This series might consist of a sequence of numbers, fractions or integers, wherein each term will be different from the other, with a set mathematical concept (/,*,-,+) or formula which would be applicable to calculate the missing number.
Arithmetic series:- This series consists of numbers that are obtained by either (+, -) the previous number with a fixed common number known as Common difference, It is generally found either in an ascending or descending order.
Geometric series:- This series consists of numbers that are obtained by either (/, *) the previous number with a fixed common number known as Common ratio, It is generally found either in an ascending or descending order.