200+ Number Series Repeated Questions For RRB PO Based on Previous Year Paper

Number Series For RRB PO: The IBPS RRB PO 2025 Exam notification is expected to be released in June 2025. The IBPS RRB PO prelims section consists of two sections: Preliminary Exam and Mains. The number series is an important concept of the Quant section, It tests your ability to identify patterns, logical sequences, and mathematical relationships in a given set of numbers. A well-structured preparation strategy can help you master this topic and score high. In this article, we are providing the IBPS RRB PO number series preparation strategy and tips to boost your question-solving speed, along with the 200+ important questions based on Previous year trends. Candidates can check the detailed strategy in the article below.

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To crack the IBPS RRB PO 2025 exam, candidates can start preparation with our free study resources like mock tests, topic-wise tests, and mini mocks to enhance their accuracy and speed. Attend weekly live tests to get a real exam-like experience and compete with peers. Stay updated with daily quizzes and free eBooks on current affairs. Analyse past trends to create a winning exam strategy.

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Number Series For RRB PO 2025 Exam

If you’re targeting RRB PO 2025, mastering Number Series Questions is non-negotiable. Regular practice using previous year paper-based questions and knowing what types of questions are asked in the examination. Every year, 5-6 number series questions are asked in the RRB PO Prelims and even in the Mains exam.

Understanding the Number Series Section

Number series is a sequence of numbers arranged in a particular order where some pattern or rule applies. You are asked to identify the pattern and find either the missing number, the wrong number or the next number in the sequence.

• Addition Series
• Subtraction Series
• Multiplication/Division Series
• Mixed Operation Series
• Square/Cube Series
• Prime Number Series
• Alternate Pattern Series
• Difference Series
• Geometric Progression Series
• Complex Pattern Series (Involving multiple operations)

Types of Number Series Asked in IBPS RRB PO 2025 Exam

Addition/Subtraction Series

This type of number series follows a sequence where the next term is obtained by adding or subtracting some value from the previous term. These subtracted values ​​form a pattern, which the candidate needs to identify.

Multiplication Series

These series follow a sequence in which the next term is obtained by multiplying a number or a series of numbers by the previous term, which may follow patterns involving fixed multipliers, alternating terms or even square and cube roots.

Division Series

These series follow a sequence in which the next term is obtained by dividing the previous term according to a particular rule. The division follows a consistent pattern which needs to be identified to find the next number in the series.

Wrong Number Series

The questions in these types of series appear to be simple, but are complex to find the pattern. You have to figure out which one is the odd one out.

200+ Number Series Repeated Questions For RRB PO Based on Previous Year Paper

Here we are providing the RRB PO 200+ question PDF for the Number series. Candidates can click the link and download a free PDF.

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

28, ?, 48, 73, 108, 153

A) 35

B) 38

C) 33

D) 40

E) 39

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

16, 33, 68, 139, 282, ?

A) 560

B) 582

C) 565

D) 569

E) 512

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

228, 227, 223, 214, ?, 173

A) 198

B) 202

C) 200

D) 186

E) 193

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

66, 78, ?, 82, 74, 86

A) 72

B) 66

C) 70

D) 74

E) 88

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

40, 51, 65, ?, 102, 125

A) 82

B) 75

C) 85

D) 78

E) 90

Question 6: The following numbers form a series. Find the odd one out.

6, 8, 12, 14, 26, 36

A) 8

B) 12

C) 14

D) 26

E) 36

Question 7: The following numbers form a series. Find the odd one out.

12, 16, 25, 48, 66, 102

A) 12

B) 16

C) 25

D) 48

E) 66

Question 8: The following numbers form a series. Find the odd one out.

20, 28, 12, 36, 24, 44

A) 28

B) 12

C) 36

D) 24

E) 44

Question 9: The following numbers form a series. Find the odd one out.

5, 10, 17, 24, 37, 50

A) 10

B) 17

C) 24

D) 37

E) 50

Question 10: The following numbers form a series. Find the odd one out.

14, 22, 32, 42, 54, 62

A) 22

B) 32

C) 42

D) 54

E) 62

Step-by-Step Preparation Strategy for Number Series

Number series questions are an important component of the Quantitative Aptitude section in the IBPS RRB PO 2025 exam. Usually, the preliminary exam consists of 5-6 questions that require speed and accuracy to maximise the score within the sectional time limit of 25 minutes. This strategy outlines a structured approach to mastering number series, focusing on pattern recognition, time management, and practice techniques to enhance performance. Here we are providing a preparation Strategy to boost your question-solving speed in Number series questions.

Understand the concept: A number series is a sequence of numbers arranged according to a specific rule or pattern. The task is to identify the logic and determine the missing or next number.

• Arithmetic Progression (AP): Numbers increase or decrease by a constant difference (e.g., 2, 5, 8, 11 → difference of +3).
• Geometric Progression (GP): Numbers are multiplied by a constant ratio (e.g., 3, 6, 12, 24 → ratio of ×2).
• Square/Cube Series: Numbers are squares or cubes of integers (e.g., 1, 4, 9, 16 → squares of 1, 2, 3, 4).
• Difference Series: Differences between consecutive terms form a pattern (e.g., 1, 2, 4, 7 → differences 1, 2, 3).
• Combination Patterns: Series combining multiple operations (e.g., 2, 4, 8, 14 → +2, +4, +6).

Practice Time Management: Aim to solve each number series question in less than 60 seconds during practice. In the exam, allot 5-6 minutes for 5 questions to balance speed and accuracy.

Practice Regularly with Mock Tests: Focus on number series questions to build pattern recognition skills. Start with 20–30 questions daily. After each test, review incorrect answers to understand where you misidentified the pattern.

Practice with Purpose

• Solve Previous Year Papers: Analyse 3–4 years of IBPS RRB PO question papers to understand question types and difficulty levels. This helps identify high-weightage patterns like simplification and number series.
• Take Topic-Wise Tests: Use free topic-wise tests on platforms like PracticeMock to focus on number series. These tests strengthen pattern recognition and improve speed.
• Take free Mini mock Tests: Candidates take mini mock tests for each section to enhance their question-solving speed.
• Simulate Exam Conditions: Practice mini-mock tests to replicate the 45-minute prelims time constraint. Aim to attempt 5–6 number series questions accurately within 5 minutes.
• Analyse Mistakes: After each test, review incorrect answers to understand where you misidentified the pattern. For example, mistaking a difference series for an AP indicates a need to practice difference-based questions.

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