Infographics: Classification

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Classification
Classification is a fundamental cognitive skill that evaluates your ability to 
identify patterns, relationships, and distinctions among items. In 
competitive examinations like SSC CGL, mastering classification 
questions is essential for success in the General Intelligence and 
Reasoning section.
What is Classification?
The process of 
categorising items 
based on shared 
attributes and 
identifying the 'odd 
one out' that 
doesn't fit the 
established pattern 
or group.
Core Objective
Assess cognitive 
skills including 
information 
processing, 
creative thinking, 
pattern recognition, 
and analytical 
abilities through 
systematic 
evaluation.
Key Skill Tested
Your capacity to 
discern 
relationships, 
evaluate 
distinctions, and 
demonstrate 
discernment when 
analysing objects 
or concepts in a 
given set.
Types of Classification Questions
Understanding the various question formats helps you develop targeted 
strategies for each classification type in SSC CGL examinations.
1
Word Classification
Choose the odd word based on 
general knowledge. Requires 
strong vocabulary and 
understanding of categories, 
relationships, and contextual 
meanings among given words.
2
Number Classification
Identify the odd number by 
differentiating relationships. 
Analyse mathematical patterns, 
sequences, properties, and 
numerical relationships among 
given numbers.
3
Numeral Pair/Group
Find the incorrect pair or group 
among given options. Examine 
the mathematical relationship 
or pattern connecting numbers 
in each pair or group.
4
Letter Group Classification
Select the odd letter group 
from given options. Requires 
understanding of alphabetical 
patterns, positional values, and 
logical sequences in letter 
arrangements.
5
Synonyms & Antonyms
Choose the odd pair based on 
word meanings. Tests 
vocabulary knowledge and 
understanding of semantic 
relationships between words in 
given pairs.
6
Image-Based Classification
Identify the odd image from 
visual representations. 
Evaluates visual perception, 
pattern recognition, and ability 
to distinguish visual 
characteristics and categories.
Success Tips
Build Strong Vocabulary: 
Develop comprehensive word 
knowledge and understanding 
of relationships
Enhance General Knowledge: 
Stay updated with diverse 
topics and categorical 
information
Practice Pattern Recognition: 
Regular practice improves 
speed and accuracy 
significantly
Develop Analytical Thinking: 
Train your mind to quickly 
identify similarities and 
differences
Common Mistakes to Avoid
Rushing through questions 
without proper analysis
Ignoring subtle differences 
between items
Focusing only on obvious 
patterns
Not considering multiple 
perspectives
Inadequate practice of various 
question types
Solved Examples with Detailed Analysis
Example 1: Word Classification
Question: Choose the word which is least like the other words in the 
group.
(a) Tiger (b) Lion (c) Leopard (d) Cow
Answer: (d) Cow
Solution: Tiger, Lion, and Leopard are carnivorous animals that hunt 
for food, whilst Cow is a herbivorous animal that feeds on plants. 
The fundamental difference in dietary habits makes Cow the odd 
one out in this classification.
Example 2: Pair Classification
Question: Choose the odd pair from the given options.
(a) Volume : Litre (b) Time : Second (c) Length : Metre (d) Pressure : 
Barometer
Answer: (d) Pressure : Barometer
Solution: In options (a), (b), and (c), the second term represents the 
unit of measurement for the first term. However, in option (d), 
Barometer is an instrument used to measure pressure, not a unit of 
measurement. This distinction makes it the odd pair.
01
Read Carefully
Thoroughly examine all given items 
and understand what is being asked 
in the question.
02
Identify Pattern
Look for common characteristics, 
relationships, or properties shared 
by most items in the group.
03
Find Deviation
Spot the item that doesn't conform 
to the established pattern or 
relationship amongst others.
04
Verify Answer
Double-check your selection by 
confirming the odd item truly differs 
from the rest of the group.
5- 7
Questions Expected
Average number of 
classification 
questions in SSC CGL 
Tier-I examination
60
Seconds Per Question
Recommended time 
allocation for solving 
each classification 
question efficiently
90%
Accuracy Target
Expected accuracy 
level with consistent 
practice and proper 
understanding of 
concepts
Key Takeaway
Classification questions are scoring topics in the General 
Intelligence and Reasoning section. Focus on building a strong 
vocabulary, enhancing general knowledge, and practising diverse 
question types regularly. Remember that these questions assess 
not just your knowledge but also your analytical thinking, pattern 
recognition, and decision-making abilities under time constraints. 
Consistent practice and strategic preparation will significantly 
improve your performance in this crucial section of SSC CGL 
examination.