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Series

Find out the Next Digit- In these types of questions,a series of digit are given and the candidates are asked to find out the next digit of the series.
Eg.1 - What should come next in the Following Series
         223234234523456234567234567823456789
Explanation-
         2/23/234/2345/23456/234567/2345678/23456789/2
Hence,2 should come next in the series of numbers.

Find out the next letter- In these type of questions,a series of letters are given and candidates are asked to find out the next letter of the series.
Eg.1 - What should come next in the Following Series?
          AACACEACEGACEGIACEGIKACEGIK
Explanation-
          A +2 C
          A +2 C +2 E
          A +2 C +2 E +2 G
          A +2 C +2 E +2 G +2 I
          A +2 C +2 E +2 G +2 I +2 k
          A +2 C +2 E +2 G +2 I +2 k +2 M
Hence,M will come next in the letter series.

Number Series- In this type a number series is given and candidates are asked either to insert a missing(?) number or to find the one that does not follow the pattern of series.
Eg.1 - What should come in the place of (?) in the Following Series?
0,7,26,63,124, ?
Explanation- The pattern of series is :
    0            7         26         63         124        215
   ↓          ↓          ↓             ↓          ↓          ↓
(13-1)   ( 23-1)   ( 33-1 )   (43-1)   (53-1)     (63-1)
Hence,215 will come in the place of question (?).

Alphabet Series-In this type of questions, a series consisting of alphabet is given.One or two letters of the sewries are kept hidden and that place is denoted by ‘?’.Candidates have to fill up appropriate letter from the option.

Eg.1 - What should come in the place of (?) in the Following Series?
          AC EG IK MO ?
Explanation-The pattern of Series is
      A   +4    E   +4    I   +4   M   +4  Q
      C   +4    G   +4    K   +4   O   +4   S
Hence,QS will come in the place of question (?)

Letter Series-In this type of questions , a set of letter is written four five times with blank spaces,in between.The series follows a specific pattern and the candidate is required to find out the letters which comes in the place of blank spaces.

Eg.1 – What should come in the place of blank spaces in the Following
Series?
         ab_d_bc_a_c_a_c_ab_d
Explanation-The pattern of Series is
         abcd/abcd/abcd/abcd cadbdc
Hence,cadbdc will come in the place of blank spaces.

Conditional Digits/Letter series- In these types of questions,a series of digit/letters are given and the candidates are asked to find out the number of digits/letters according to the requirement of the question.

Eg.1 - How many 4’s are their in the following series of numbers which are preceded by 6 but not immediately followed by 5.
         3 4 2 6 4 5 6 4 7 8 9 6 4 5 9 5 6 4 8 7 8 4 6 4 3

Explanation-
         3 4 2 6 4 5 6 4 7 8 9 6 4 5 9 5 6 4 8 7 8 4 6 4 3
Hence,three 4’s in the given series are preceded by 6, but not
immediately followed by 5.