Last 5 Year Missing Number Series Questions for SBI Clerk [Video+PDF]

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.

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+12 =3
  • 3+22=7
  • 7+32=16
  • 16+42=32
  • 32+52=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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