SSC CGL Tier 1

Number Series

What is Number Series?
 

A Number Series is a sequence of numbers arranged according to a specific pattern or rule. In reasoning, you are required to identify the pattern and find the missing or next number.
 

Number series questions test your ability to observe patterns and apply logical thinking quickly.
 

Types of Number Series
 

1. Simple Series (Addition/Subtraction)

Example:
2, 4, 6, 8, ?
Pattern: +2
Answer: 10
 

2. Multiplication/Division Series

Example:
3, 6, 12, 24, ?
Pattern: ×2
Answer: 48
 

3. Mixed Series

Example:
2, 6, 7, 21, 22, ?
Pattern: ×3, +1, ×3, +1
Answer: 66
 

4. Square/Cube Based Series

Example:
1, 4, 9, 16, ?
Pattern: Squares (1², 2², 3², 4²)
Answer: 25