Missing number series is an important topic for various bank & government exams like Bank PO, Bank Clerk, RBI, SSC CGL, etc. In this article, we’ll be looking at some missing number series problems which have appeared in the last 5 years of SBI Clerk Exams. We’ll also discuss some tricks to solve these questions in the minimum time possible.

Table of Contents

**Last 5 Year Missing Number Series Questions – SBI Clerk | Download PDF**

Aspirants can download the ebook using the link given below and watch the video solutions using the video embedded below.

**Last 5 Year Missing Number Series Questions – SBI Clerk | Video Solution**

Here is our expert mentor solving these past 5 year missing number questions in the most subtle way. Take a look.

**What are Missing Number Series?**

Missing number series is a series where one term is left for the aspirant to understand the pattern and find out the missing number using mathematical operations. A better approach to solve these questions is to identify the pattern or the formula used to create the series.

The different type of sequences and series are:

- Arithmetic sequence – A sequence in which each term is obtained by adding or subtracting a definite number to the previous number is known as the arithmetic sequence.
- Harmonic sequence – A series of a number in which the reciprocals of all the terms of the sequence forms an arithmetic sequence is known as a harmonic sequence.
- Geometric sequence – A series in which each term is obtained by dividing or multiplying a definite number to the previous number is known as the geometric sequence.
- Fibonacci’s sequence – A sequence in which each number is obtained by adding two previous terms and the sequence starts with 0 and 1 is known as the Fibonacci sequence. Sequence is represented by F0 = O and F1 = 1 and Fn = Fn -1 + Fn -2

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**Sneak Peek Into the Ebook**

Few of the questions covered in the ebook are –

**1. 2, 3, 7, 16, 32, ?**

**Ans – 57**

Explanation –

- 2+1
^{2 }=3 - 3+2
^{2}=7 - 7+3
^{2}=16 - 16+4
^{2}=32 - 32+5
^{2}=57

**2. 120, 24, 6, 2, ?, 1**

**Ans – 1**

Explanation –

- 120/5=24
- 24/4=6
- 6/3=2
- 2/2=1
- 1/1=1

** 3. 2, 4, 11, 37, 153, ?**

**Ans – 771**

Explanation –

- 2×1+2= 4
- 4×2+3=11
- 11×3+4= 37
- 37×4+5 = 153
- 153×5+6 = 771

**4. 3, 10, 22, 39, 61, ?**

**Ans – 88**

Explanation – Here, Difference of Difference is 5

- 10-3= 7
- 22-10= 12
- 39-22= 17
- 61-39= 22
- 88-61= 27

**5. 8, 4, 4, 6,12, ?**

**Ans – 30**

Explanation –

- 8x 0.5 =4
- 4×1=4
- 4×1.5=6
- 6x 2=12
- 12x 2.5 = 30

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