Number Series for SSC CGL Exam, Download Free PDF

Number Series for SSC CGL: The Staff Selection Commission (SSC) conducts the SSC CGL Exam to recruit candidates for various government departments. This blog has provided the number series questions for SSC CGL 2025 exam. This will help them in their preparation for the exam. Number series is one of the topics that belong to the SSC CGL reasoning section. In this blog, we have provided the Number Series Most Important Questions for SSC CGL Tier 1 Exam with concept and solution PDF. Candidates are advised first to understand the concept and then try to solve the questions by themselves.

Concept of Number Series

Concept: A number series is a sequence of numbers that follow a particular pattern or rule. The numbers in a series are related to each other by a certain relationship, and the goal is to identify this pattern by which we can predict the next numbers in the sequence.

Types of Number Series:

There are many different kinds of number series, but some common types include:

• Arithmetic Series: This series has a constant difference between consecutive numbers.
  • Example: 2, 4, 6, 8, 10 (Here, each number increases by 2).
• Geometric Series: This series has a constant ratio between consecutive numbers.
  • Example: 2, 6, 18, 54 (Here, each number is multiplied by 3 to get the next number).
• Fibonacci Series: In this series, each number is the sum of the two previous numbers.
  • Example: 0, 1, 1, 2, 3, 5, 8, 13, …
• Square Series: This series contains numbers that are the squares of natural numbers.
  • Example: 1, 4, 9, 16, 25, …
• Cube Series: This series contains numbers that are cubes of natural numbers.
  • Example: 1, 8, 27, 64, 125, …

Most Important Questions PDF for Number Series

Question 1: A series is given with one term missing. Choose the correct alternatives from the given ones that will complete the series.

15, 21, 45, 105, 225, 435, 771, 1275, ______

A) 1779

B) 1995

C) 1945

D) 1885

Question 2: Select the combination of letters that when placed sequentially in the blanks of the given series will complete the series.

_ U G H _ D E _ Y _ G _ F _ E V _ _ G H _ D _ V

A) M, F, V, U, H, D, M, U, F, E

B) Q, F, V, E, H, D, Q, U, F, E

C) Y, F, V, U, H, D, Y, U, F, E

D) X, G, H, U, H, D, Y, U, G, H

Question 3: Select the combination of letters that when sequentially placed in the blanks of the given letter series will complete the series.

P _ _ M _ Q R _ S S _ P _ _ M Q _ R S _ _ P Q M _ _ _ R S _

A) Q, Q, M, R, P, Q, M, R, S, Q, M, Q, S, S

B) P, Q, M, R, P, Q, M, R, S, P, M, Q, R, S

C) P, M, Q, R, P, M, Q, R, S, P, Q, M, R, S

D) Q, Q, M, R, P, Q, M, R, S, P, M, Q, P, S

Question 4: A series is given with one term missing. Choose the correct alternatives from the given ones that will complete the series.

107, 209, 345, 515, ___, 957, 1229

A) 707

B) 719

C) 699

D) 723

Question 5: Which of the following letter-clusters will replace the question mark [?] in the given series to make it logically complete?

TEAM, OIEH, ?, EQMX, ZUQS

A) KMID

B) JNJC

C) JMIC

D) JLIB

Disclaimer: The number series questions and solutions provided in this blog are for practice and learning purposes only. While every effort has been made to ensure accuracy, Practicemock does not guarantee that these questions will appear in the actual SSC CGL exam. Candidates are advised to refer to the official SSC notices and syllabus for authoritative information.

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