Reasoning

Number Classification and Analogy

143 Questions

Number classification and analogy questions test logical reasoning by identifying numerical relationships. Candidates must detect the underlying pattern among number sets. This topic is a staple in the reasoning sections of SSC, banking, and railway exams.

Number analogiesOdd one outNumerical relationshipsPattern identificationSet matching

Number Classification and Analogy Questions

Multiple choice

Directions: In the following question, there is a certain relationship between two given numbers on one side of (: :) and one number is given on the other side of (: :) while another number is to be found from the given alternatives having the same relationship with this number as the numbers of the given pair bear. Choose the best alternative.

12 : 28 : : 21 : ?

  1. 24

  2. 40

  3. 32

  4. 30

  5. 36
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct option as it follows the correct pattern of 3(x - 1) : 4(x + 2). If x = 5, then 3(5 - 1) = 12 and 4(5 + 2) = 28. If x = 8, then 3(8 - 1) = 21 and 4(8 + 2) = 40.

Multiple choice

Directions: In the following question, there is a certain relationship between two given numbers on one side of (: :) and one number is given on the other side of (: :) while another number is to be found from the given alternatives having the same relationship with this number as the numbers of the given pair bear. Choose the best alternative.

64 : 27 : : 216 : ?

  1. 5

  2. 512

  3. 343

  4. 125

  5. 25
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option as it follows the correct pattern of (x3) : (x - 1)3. If x = 4, then (x3) = 64 and (x - 1)3 = 27. If x = 6, then (x3) = 216 and (x - 1)3 = 125. 

Multiple choice

Directions: In the following question, there is a certain relationship between two given numbers on one side of (: :) and one number is given on the other side of (: :) while another number is to be found from the given alternatives having the same relationship with this number as the numbers of the given pair bear. Choose the best alternative.

7 : 25 : : 8 : ?

  1. 216

  2. 36

  3. 64

  4. 49

  5. 100
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct option as it follows the correct pattern of x : (x - 2)2. If x = 7, then (7 - 2)2 = 25. If x = 8, then (8 - 2)2 = 36. 

Multiple choice

Directions: In the following question, there is a certain relationship between two given numbers on one side of (: :) and one number is given on the other side of (: :) while another number is to be found from the given alternatives having the same relationship with this number as the numbers of the given pair bear. Choose the best alternative.

8 : 64 : : 125 : ?

  1. 216

  2. 512

  3. 49

  4. 343

  5. 27
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct option as it follows the correct pattern of x3 : (x + 2)3. If x = 2, then 23 = 8 and (2 + 2)3 = 64. If x = 5, then 53 = 125 and (5 + 2)3 = 343.

Multiple choice

Directions: In the following question, there is a certain relationship between two given numbers on one side of (: :) and one number is given on the other side of (: :) while another number is to be found from the given alternatives having the same relationship with this number as the numbers of the given pair bear. Choose the best alternative.

3 : 5 : : 5 : ?

  1. 8

  2. 12

  3. 14

  4. 6

  5. 7
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This is the correct option as it follows the correct pattern of (x + 1)/2 : (x + 5)/2. If x = 5, then (5 + 1)/2 = 3 and (5 + 5)/2 = 5. If x = 9, then (9 + 1)/2 = 5 and (9 + 5)/2 = 7.

Multiple choice

Directions: In the following question, there is a certain relationship between two given numbers on one side of (: :) and one number is given on the other side of (: :) while another number is to be found from the given alternatives having the same relationship with this number as the numbers of the given pair bear. Choose the best alternative.

10 : 25 : : 14 : ?

  1. 28

  2. 7

  3. 49

  4. 343

  5. 21
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct option as it follows the correct pattern of 2x : (x)2. If x = 5, then 2*5 = 10 and (5)2 = 25. If x = 7, then 2*7 = 14 and (7)2 = 49. 

Multiple choice

Directions: In the following question, there is a certain relationship between two given numbers on one side of (: :) and one number is given on the other side of (: :) while another number is to be found from the given alternatives having the same relationship with this number as the numbers of the given pair bear. Choose the best alternative.

18 : 30 : : 26 : ?

  1. 42

  2. 39

  3. 24

  4. 14

  5. 60
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is the correct option as it follows the correct relationship of 2(x + 2) : 3(x + 3). If x = 7, then 2(9) = 18 and 3(10) = 30. If x = 11, then 2(13) = 26 and 3(14) = 42.

Multiple choice

Directions: In the following question, there is a certain relationship between two given numbers on one side of (: :) and one number is given on the other side of (: :) while another number is to be found from the given alternatives having the same relationship with this number as the numbers of the given pair bear. Choose the best alternative.

3 : 2 : : 9 : ?

  1. 6

  2. 54

  3. 3

  4. 36

  5. 5
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is the correct option as it follows the correct pattern of x/2 : x/3. If x = 6, then 6/2 = 3 and 6/3 = 2. If x = 18, then 18/2 = 9 and 18/3 = 6.

Multiple choice

Directions: In the following question, there is a certain relationship between two given numbers on one side of (: :) and one number is given on the other side of (: :) while another number is to be found from the given alternatives having the same relationship with this number as the numbers of the given pair bear. Choose the best alternative.

24 : 29 : : 27 : ?

  1. 140

  2. 19

  3. 84

  4. 30

  5. 32
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This is the correct option as it follows the correct pattern of (x + 20) : (x + 25). If x = 4, then (x + 20) = 24 and (x + 25) = 29. If x = 7, then (x + 20) = 27 and (x + 25) = 32.