Most Asked Number Series Questions for SBI PO 2025, Download Free PDF

Number Series is one of the simplest and most scoring topics in the Quant section of the SBI PO exam 2025. There are two types of questions: Missing Number Series and Wrong Number Series. If you can identify the pattern quickly, you can solve these questions in under a minute. Around 4 to 5 questions are usually asked in SBI PO Prelims. In this blog, you will get the type of number series in the SBI PO Exam 2025.

What is a Number Series?

In a number series, you are given a sequence of numbers with a missing or wrong number. What you have to do is identify the rule or pattern used and find the correct number. The patterns can be based on addition, subtraction, multiplication, division, squares, cubes, or mixed logic.

Importance & Weightage of Number Series in SBI PO Exam

In the SBI PO Prelims exam, there are 4-5 questions that come from a number series. You may get questions based on missing numbers, wrong numbers, or a mixed pattern. These questions are often placed at the start of the Quant section because they are quick to solve and help build confidence early in the paper.

Most Important Number Series Questions for SBI PO 2025

Here we are providing the most important Number Series for SBI PO questions. Candidates can click the PDF link and attempt all the questions

Question 1: What will come in place of the question mark (?) in the following series?

17, 17, 19, 31, ?, 327

A) 61

B) 72

C) 87

D) 93

E) 117

Question 2: What will come in place of the question mark (?) in the following series?

1, 22, 66, ?, 231, 356

A) 142

B) 135

C) 154

D) 144

E) 123

Question 3: What will come in place of the question mark (?) in the following series?

4, 45, 176, ?, 1044, 2009

A) 386

B) 417

C) 441

D) 475

E) 498

Question 4: What will come in place of the question mark (?) in the following series?

49, 71, ?, 136, 179, 229

A) 100

B) 98

C) 101

D) 103

E) 93

Question 5: What will come in place of the question mark (?) in the following series?

38, 45, 53, 62, ?, 83

A) 71

B) 72

C) 73

D) 74

E) 75

Number Series for SBI PO Questions PDF

An example of a Number Series with questions and answers in PDF format is provided below. Download now.

Tips to Solve Number Series Questions

 1. Observe Differences Between Terms

• Always start by checking the difference between consecutive numbers.
  
• If differences are not constant, check second-level or third-level differences.
  
• Example:
  Series: 38, 45, 53, 62…
  → +7, +8, +9… (Pattern is increasing by +1)
  

 2. Check for Multiplication or Division Patterns

• If the numbers are increasing/decreasing rapidly, look for multiplication or division.
  
• Use this, especially in larger jumps between numbers (e.g., 22 → 66 → 231).
  

 3. Try Alternate Terms

• Sometimes the pattern follows an alternate number logic (odd terms follow one rule, even terms another).
  
• Example:
  
  • 17, 17, 19, 31…
    Check 1st, 3rd, 5th → a different rule than 2nd, 4th, 6th.
    

 4. Use Square, Cube, Prime, or Factorial Clues

• Many number series use mathematical patterns like:
  
  • Squares: 4, 9, 16, 25…
    
  • Cubes: 1, 8, 27…
    
  • Primes: 2, 3, 5, 7…
    
  • Factorials: 1, 2, 6, 24…
    

 5. Write Down Steps Clearly

• Keep track of what you tried: +, –, ×, ÷
  
• If stuck, move to the next question and come back.

Disclaimer: The number series questions in this article are for practice purposes only. They are not official exam content. Actual SBI PO 2025 questions may vary. Candidates should always consult official SBI PO notices for accurate, authoritative information.

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