100+ Number Series questions for LIC AAO 2025

LIC AAO is one of the prestigious insurance exams, and very few days are left for the prelims stage. The exam is quite difficult to crack. There are three sections: Reasoning, Quants, and English. Out of which quants require a lot of practice. In the quant section, number series is one of the most important and scoring topics, as it acquires almost 3-4 marks in prelims. To ace this topic, you need a lot of practice, and to help you with this, we are providing a PDF of 100+ number series questions for LIC AAO 2025. 

100+ Number Series questions for LIC AAO 2025 PDF

100+ Number series questions will help you to ace this topic for the upcoming exam of LIC AAO. Number series test your ability to identify patterns and apply logic quickly, as these are important for decision-making roles like AAO. In this section, we are providing 100+ number series questions for LIC AAO 2025 PDF.  

100+ Number series questions for LIC AAO 2025 PDF

What is a Number Series?

Number Series are sequences of numbers arranged in a specific pattern, and you have to identify the pattern and find the next number in the series or the missing numbers. Example: Find the missing number in the series:
2, 5, 9, ?, 20, 27
Options: a) 14

              b) 16

              c) 18

              d) 24

Solution: The pattern is +3, +4, +5…. So the missing number is 14. 

Types of Number Series Patterns asked in LIC AAO 2025

There are 5 types of number series patterns asked in LIC AAO 2025. 

Arithmetic Progression (AP): In these, there is a constant difference between terms. 

Example: Sample Question:
Series: 7, 11, 15, 19,?
Options: a) 22 b) 23 c) 24 d) 25
Answer: 23 (Common difference = 4)

2. Geometric Progression (GP): There is a constant ratio between the terms. 

Sample Question:
Series: 3, 6, 12, 24,?
Options: a) 36 b) 48 c) 60 d) 72
Answer: 48 (×2 pattern)

 3. Squares/Cubes: The Pattern consists of perfect squares and cubes, and you have to find out the missing one or the next one. 

Sample Question:
Series: 1, 8, 27, 64,?
Options: a) 100 b) 125 c) 144 d) 216
Answer: 125 (5³)

4. Alternating Patterns: Two interleaved sequences are involved. 

Sample Question:
Series: 10, 20, 12, 22, 14,?
Options: a) 24 b) 16 c) 26 d) 18
Answer: 24 (Alternating +2)

 5. Complex Logic: A Combination of operations or digit manipulation is involved in this type of pattern. 

Sample Question:
Series: 1, 2, 6, 24, 120,?
Options: a) 720 b) 600 c) 240 d) 840
Answer: 720 (Factorial pattern: 1!, 2!, 3!, 4!, 5!, 6!)

Tips to solve number series easily and in less time

LIC AAO 2025 is around the corner, and every mark counts in the prelims stage. Among the scoring topics in the Quantitative Aptitude section, Number Series stands out for its simplicity and high weightage. With 3–4 questions expected in the exam, mastering this topic can give you a clear edge. To help you solve number series questions faster and more accurately, we are providing expert tips and tricks tailored for LIC AAO aspirants.

1. Identify the Pattern Type Quickly
   Most number series follow one of these five patterns:
   • Arithmetic Progression (AP)
   • Geometric Progression (GP)
   • Squares/Cubes
   • Alternating Patterns
   • Complex Logic (Factorials, Digit Manipulation)
2. Check First-Level and Second-Level Differences
   If the difference between terms is not constant, check the difference of differences. This helps in spotting hidden arithmetic or polynomial patterns.
3. Look for Multiplication or Division Patterns
   If the numbers are increasing or decreasing rapidly, try dividing or multiplying to spot a geometric progression.
4. Memorise Squares and Cubes up to 30
   This helps in instantly recognising square/cube-based series.
5. Practice Mental Math Tricks
   Fast calculations save time. Learn shortcuts for addition, subtraction, multiplication, and division.
6. Skip and Return Strategy
   If a question seems complex, skip it and come back later. Don’t waste more than 60 seconds on any number series question.

Conclusion

In this article, we have explained the concept of number series along with the patterns and their example. We have also provided a PDF for practising questions for the upcoming exam. To practice more such questions, you can take our test series, where we provide one full-length mock test absolutely free. 

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Disclaimer: This article has been created for informational and educational purposes only, based on previous exam trends, expert analysis, and publicly available data. It is not an official notification, and the Life Insurance Corporation of India (LIC) has not endorsed or released the content herein. While every effort has been made to ensure accuracy, exam patterns and question types may change, and readers are advised to verify details with official LIC updates. The practice material and predictions provided are intended to support preparation and should not be considered guaranteed exam content. Neither the authors nor PracticeMock accept responsibility for any discrepancies, errors, or outcomes arising from reliance on this article. For official information, please refer to the LIC website.