Classification - Logical Reasoning Question and Answer
Last Updated : 17 Jun, 2025
In classification questions, you're given a group of items—such as words, numbers, or objects—and you must identify the one that does not belong to the group. The logic is based on finding a common characteristic shared by most of the options and spotting the one that is different or unrelated.
Practice Quiz:
Types of Classification Reasoning
The various types of classification questions that appear in exams are:
Based on Meaning or Category
Group items sharing a common semantic category (e.g., animals, fruits).
Odd one out does not belong to that category.
Based on Function or Usage
Items are grouped by their purpose or how they are used.
Odd one has a different function.
Based on Numerical or Mathematical Properties
Items grouped by number properties (e.g., prime, even, odd).
Odd one differs in property (e.g., not prime).
Based on Physical Characteristics
Items classified by shape, size, color, or dimension.
Odd one differs in physical trait (e.g., 3D vs. 2D shape).
Based on Alphabetical or Linguistic Features
Grouped by spelling, starting letter, or number of letters.
Odd one breaks the linguistic pattern.
Based on Cultural or Contextual Knowledge
Group items by historical, cultural, or contextual relevance.
Odd one belongs to a different context (e.g., scientist vs. authors).
Solved Question on Classification - Logical Reasoning
Q1: Which of the following is the odd one out?
- Lion
- Tiger
- Cheetah
- Wolf
Answer: (4) Wolf
Explanation: Lion, Tiger, and Cheetah are all wild cats (felines), while Wolf is a canine.
Q2: Identify the item that does not belong in the group:
- Rose
- Tulip
- Lotus
- Apple
Answer: (4) Apple
Explanation: Rose, Tulip, and Lotus are flowers; Apple is a fruit.
Q3: Find the odd number in the following set:
- 7
- 13
- 21
- 17
Answer: (3) 21
Explanation: 21 is not a prime number; the others are prime numbers.
Q4: Which of the following does not belong to the group?
- Spoon
- Fork
- Knife
- Plate
Answer: (4) Plate
Explanation: Spoon, Fork, and Knife are eating utensils used to pick or cut food; Plate is used to hold food.
Q5: Which of the following is the odd one out?
- Einstein
- Newton
- Tesla
- Shakespeare
Answer: (4) Shakespeare
Explanation: Einstein, Newton, and Tesla are scientists; Shakespeare was a playwright/author.
Q6: Identify the shape that is different:
- Square
- Rectangle
- Cube
- Circle
Answer: (3) Cube
Explanation: Square, Rectangle, and Circle are 2D shapes; Cube is a 3D shape.
Q7: Identify the word that is different from the rest.
- Mercury
- Moon
- Venus
- Earth
Answer: (2) Moon
Explanation: Mercury, Venus, and Earth are planets; Moon is a natural satellite.
Q8: Which of the following words does not belong to the group?
- Justice
- Honesty
- Iron
- Courage
Answer: (3) Iron
Explanation: Justice, Honesty, and Courage are abstract qualities or virtues; Iron is a tangible material (metal).
Q9: Which word is different from the others?
- Running
- Swimming
- Skating
- Reading
Answer: (4) Reading
Explanation: Running, Swimming, and Skating are physical activities; Reading is not.
Q10: Select the pair that does not belong with the others.
- Pen : Write
- Knife : Cut
- Spoon : Eat
- Book : Read
Answer: (3) Spoon : Eat
Explanation: In the other pairs, the first item is used to perform the second action; Spoon is used for eating, but not to "eat" directly.
Practice Question on Classification - Logical Reasoning
Q1: Choose the word which is different from the rest:
- Chicken
- Snake
- Cow
- Tiger
Q2: Choose the word which is different from the rest:
- Assets : Liabilities
- Debit : Credit
- Income : Expenditure
- Advantage : Profit
Q3: Choose the letter group which is different
- MTF
- SLE
- RKD
- UNG
Q4: Choose the word which is different from the rest:
- Sarangi
- Telephone
- Saxophone
- Xylophone
Q5: Choose the odd word pair:
- Wool
- Feather
- Hair
- Grass
Q6: Which of the following does not belong to the group?
- Hydrogen
- Oxygen
- Carbon
- Brass
Q7: Choose the odd one:
- Myanmar
- Bangladesh
- Bhutan
- Thailand
Q8: Pick the item that does not fit:
- 19
- 23
- 29
- 39
Q9: Find the odd pair:
- Apple – Fruit
- Carrot – Vegetable
- Rose – Flower
- Gold – Chemical
Q 10: Which of the following does not belong to the group?
- Fibonacci
- Pascal
- Newton
- Pythagoras
Answer Key
- Snake
- Advantage : Profit
- SLE
- Telephone
- Grass
- Brass
- Thailand
- 39
- Gold – Chemical
- Newton
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