Number Series
View Questions of Number Series
Reasoning - Number Series
What is Number Series?
Identify the next or missing number in a sequence governed by a mathematical pattern.
Common Patterns
1. Arithmetic (+/− constant) 2. Geometric (×/÷) 3. Square/Cube Numbers 4. Prime numbers 5. Mixed or alternating series
Example Questions
- Series: 2, 4, 8, 16, ?
Answer: Answer: 32 (×2 each step) - Series: 1, 4, 9, 16, ?
Answer: Answer: 25 (Perfect squares)
Exam Tips
- Write differences between terms to spot progression.
- Look for alternating or two-part sequences.
- Test with squares, cubes, or common primes.
Common Mistakes
- Assuming a single step pattern prematurely.
- Skipping check for alternating or position-based changes.
- Missing mix of operations (e.g., +2, ×2 alternately).
Quick Revision Checklist
- Memorize square/cube numbers up to 20.
- Practice both missing term and wrong term series.
- Use pen-and-paper to plot differences.
Summary: Number Series problems improve analytical and predictive skills. Consistent practice with varied series ensures strong pattern recognition.
Topics
- Analogy
- Number Series
- Classification
- Series Completion
- Coding-Decoding
- Input Output
- Inequality
- Blood Relation
- Puzzle Test
- Sequential Output Tracing
- Direction Sense Test
- Linear Seating Arrangement
- Circular Seating Arrangement
- Logical Venn Diagrams
- Alphabet Test
- Number, Ranking and Time Sequence Test
- Mathematical Operations
- Logical Sequence of Words
- Arithmetical Reasoning
- Inserting The Missing Character
- Data Sufficiency
- Decision Making
- Assertion and Reason
- Situation Reaction Test
- Letter and Symbol Series
- Verification of Truth of the Statement
- Logic
- Statement - Arguments
- Statement - Assumptions
- Statement - Courses of Action
- Syllogisms
- Statement - Conclusions
- Deriving Conclusions From Passages
- Theme Detection
- Question - Statements
- Miscellaneous Logical Puzzles
- Mirror and Water Images
- Paper Folding and Cutting
- Completion of Incomplete Pattern