Series Completion
View Questions of Series Completion
Reasoning - Series Completion
What is Series Completion?
These questions test your ability to identify and continue patterns in sequences of numbers, letters, or symbols. The key is to understand the logic behind the progression.
Types of Series
1. Arithmetic Series: Addition or subtraction by a fixed number. 2. Geometric Series: Multiplying/dividing by a fixed number. 3. Square/Cube Series: Squares (1, 4, 9...) or cubes (1, 8, 27...) 4. Alternating Series: Different operations in alternate steps. 5. Complex/Mixed Series: Combines multiple patterns (e.g., +2, ×2 alternately).
Example Questions
- 2, 4, 8, 16, ?
Answer: 32 (×2 pattern) - 1, 4, 9, 16, ?
Answer: 25 (Perfect squares) - A, C, F, J, ?
Answer: O (+2, +3, +4, ...) - Z, X, U, Q, ?
Answer: L (−2, −3, −4, ...)
Exam Tips
- Always write down the differences between consecutive terms to find patterns.
- Be patient; complex patterns may alternate or involve reverse logic.
- Check for combination of arithmetic and geometric logic, especially when numbers increase or decrease rapidly.
- Use tables or notations to visualize letter shifts.
Common Mistakes
- Not considering alternate term patterns.
- Missing composite rules like ‘+2 then ×2’.
- Guessing based on visual similarity rather than actual rule.
Quick Revision Checklist
- Practice separate types: arithmetic, geometric, alphabets.
- Memorize squares and cubes up to 20.
- Be comfortable converting letters to their alphabetical positions (A=1, B=2...).
- Use ruled paper or grid to keep calculations clean during timed practice.
Summary: Series Completion helps in developing predictive reasoning. It’s a valuable skill not only in exams but in coding, analytics, and logical tasks requiring sequence detection and pattern-based decision-making.
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