## Verbal Reasoning: Series Completion

Series completion is an integral part of the Verbal Reasoning Ability Test and finds place in the various competitive exams and entrance exams. The series may be of numbers or alphabets.

The following types of questions are asked in a series completion test.

### Find the Missing Number: Series Completion

Example :

**Question 1.** Find the number in the blank of the series.

3, 7, 15, 31, 63, 127, _

**Answer:** The sequence being followed in this number series is;

1st number x 2+1 = 2nd number.

2nd number x 2+1 = 3rd number.

Hence the series will be completed by 127 x 2 + 1 = 255

### Replace the Wrong Term: Series Completion

Example :

**Question 1.** Find out the wrong term in the series.

6, 10, 27, 105, 515, 3084

**Answer:** The sequence being followed in this series is as under;

6 x 2 – 2 = 10

10 x 3 – 3 = 27

27 x 4 – 4 = 104

104 x 5 – 5 = 515

515 x 6 – 6 = 3084

The fourth term 105 is wrong.

### Find the Missing Alphabet: Series Completion

Example :

**Question 1.** Find out the missing alphabet in the series.

C F L _ O R

**Answer:** The series follows 3rd, 6th, 9th, 12th, 15th and 18th letter of alphabet.

This missing alphabet therefore is L.

Instead of one alphabet series, there can be a series of groups of alphabets in which you may need to find the missing group.

### Find the Wrong Group of Alphabets

In these types of questions a series of groups of alphabets is given in which one group is wrong. You need to replace it with the correct group find it and if asked.

The letters and numbers can be mixed to make a series like A2B, C3D, E4F or MN 20, OP 25, QR 30, ST 35 etc.

Capital letters and small letters can also be mixed to make a series MnI KJi, HGf, DCb or TuV, NoP, HiJ, BcD.

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