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What is Classification?

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Classification means to assort items of a given group on the basis of a certain common quality they possess and then spot the stranger or odd one out. In this case, candidates will be given a group of certain items, out of which all except one are similar to one another in some manner; candidates should choose this one item that does not fit into the given group.

Classification and odd one out questions aim to judge the candidate’s information processing capabilities, creative thinking ability, and evaluation skills. 

Types of Classification Reasoning 

Let us see the various types of questions that may come one by one from below. 

1. CHOOSING THE ODD WORD BASED ON GENERAL KNOWLEDGE

In this type of classification reasoning, candidates will be given a bunch of words and they have to pick out the correct one.

2. CHOOSING THE ODD NUMBER

In this type of classification reasoning, certain pairs of numbers are given, and candidates need to find out that one by differentiating the relationship of the given numbers.

3. CHOOSING THE ODD NUMERAL PAIR/GROUP

In this type of classification reasoning, candidates will be given some pairs of groups then they have to find out the wrong one.

4. CHOOSING THE ODD LETTER GROUP

In this type of classification reasoning, candidates will be given some odd letters then they have to find out the wrong one.

5. CHOOSING THE ODD PAIR OF WORD BASED ON SYNONYMS AND ANTONYMS

In this type of classification reasoning, candidates will be given some pair of words that have some meaning (synonyms and antonyms)from there they need to choose the correct answer.

6. CHOOSING THE ODD PAIR OF WORD BASED ON IMAGE BASED

In this type of classification reasoning, candidates will be given images among which they have to choose the odd one.

How to Solve Question Based on Classification – Know all Tips and Tricks 

Candidates can find various tips and tricks from below for solving the questions related to the Classification reasoning section. 

Tip # 1:  Classification and odd one out questions aim to judge the candidate’s information processing capabilities, creative thinking ability, and evaluation skills. 

Tip # 2: Questions on classification require a strong vocabulary and general knowledge. So be well versed in these subject areas. 

Classification Sample Questions

Question 1: Choose the word which is least like the other words in the group.

  1. Tiger
  2. Lion
  3. Leopard
  4. Cow

Solution: In this group of words, all animals are carnivorous but cows are herbivorous. 

Hence, the correct answer is Cow.

Question 2: Choose the odd pair.

  1. Volume : Liter
  2. Time : Second
  3. Length : Meter 
  4. Pressure : Barometer 

Solution: In all options, the second pair is the unit to measure the first one but in option 4, the barometer is the instrument to measure pressure.

Hence, the correct answer is Pressure : Barometer.

Question 3: Choose the number which is different from others in the group. 

  1. 13
  2. 17
  3. 23
  4. 27

Solution: All numbers from all the options are prime numbers except option 4. 

Hence, the correct answer is 27.

Check out for more details on Inequality

Question 4: Choose the number pair which is different from others in the group

  1. 14 – 7 
  2. 24 – 3 
  3. 37 – 5 
  4. 42 – 2

Solution: The first number is the multiple of the second term except for the third term.

Hence, the correct answer is 37 – 5.

Question 5: Choose the letter pair which is different from others in the group.

  1. BD
  2. IK
  3. PN
  4. SU

Solution: Clearly, all the groups consist of two alternate letters in order, while in the group they are in reverse order.

Hence, the correct answer is PN.

Question 6: Choose the pair of words which are different from others in the group.

  1. Length : Extend
  2. Duration : Period 
  3. Time : Span 
  4. Expanse : Stretch

Solution: Here, in all options, the first word is the synonyms of the second word except the last one.

The last one is the antonyms of the first one. 

Hence., the correct answer is Expanse : Stretch.

Question 7: In the following question, find the odd one from the given alternatives.

  1. Linen
  2. Cotton
  3. Iron 
  4. Silk

Solution: Linen, Cotton and Silk are types of clothes.

Hence, Iron is the odd one from the given alternative.

Question 8: In the following question, find the odd one from the given alternatives.

  1. Netherlands
  2. Brunei
  3. Croatia 
  4. Serbia

Solution: The Netherlands, Croatia and Serbia are European countries. 

Hence, Brunei is the odd one from the given alternative.

Question 9: In the following question, find the odd one from the given alternatives.

  1. Electrician
  2. Paediatrician
  3. Oncologist 
  4. Cardiologist 

Solution: Pediatrician, Oncologist and Cardiologist are Doctors. 

Hence, Electrician is the odd one from the given alternative.

Practice questions from Images & Figure Counting Reasoning

Question 10: Select the odd number pair from the given alternatives. 

  1. 13, 169
  2. 17, 269
  3. 14, 196
  4. 16, 256

Solution: Here

  1. 13, 169 → (13)2 = 169
  2. 17, 269 → (17)2 = 269 ≠ 289
  3. 14, 196 → (14)2 = 196
  4. 16, 256 → (16)2 = 256

Hence, 17, 269 is the odd number pair.

Check out for more insights on Inductive Reasoning

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