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