A series is a specified pattern of sequentially arranged numbers or symbols. Aspirants must either find a missing or incorrect term in the sequence. The types of series include number series, alphabet series, alphanumeric series, and symbol or character series.
A series with numbers arranged in a particular order with a specific relation of one with respect to another is a number series. For example: 2, 3, 4, 5, 6 is a number series in an ascending order. We can also say that in this series, each number is one unit ahead of its predecessor.
Alphabet Series :
An alphabet series has a set of alphabets such that all the letters follow a specific pattern. For example: B, D, F, H, J is an alphabet series where each element of the series is written by skipping the alphabet between them.
Alphanumeric Series :
As the name suggests, an alphanumeric series has elements in the form of numbers and alphabets. For example: a2b, b3c, c4d, d5e, e6f is an alphanumeric series. In this series, each element has two consecutive alphabets with a digit in between them. The series follows an ascending order of numbers and continuous alphabets in order.



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