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.

8 : 27 : : 64 : ?

  1. 25

  2. 125

  3. 16

  4. 9

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

 It follows the correct relationship x3 : (x + 1)3, i.e. x = 2, x3 = 8 and (x + 1)3 = 27. If x = 4, then x3 = 64 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.

63 : 80 : : 72 : ?

  1. 100

  2. 64

  3. 70

  4. 90

  5. 80
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct answer as it follows the correct relationship 9x : 10(x + 1), i.e. x = 7, 9x = 7 * 9 = 63 and 10(x + 1) = 80. If x = 8, then 9x = 9 * 8 = 72 and 10(x + 1) = 90.

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.

49 : 94 : : 86 : ?

  1. 80

  2. 61

  3. 100

  4. 68

  5. 131
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct answer as the ten's and the unit's place digits are reversed.

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 : 100 : : 6 : ?

  1. 64

  2. 36

  3. 16

  4. 216

  5. 30
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is the correct answer as it follows the relationship x : (x + 2)2, i.e. x = 8, (x + 2)2 = (8 + 2)2 = 100. If x = 6, then (x + 2)2 = (6 + 2)2 = 64.

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.

564 : 30 : : 593 : ?

  1. 17

  2. 359

  3. 34

  4. 51

  5. 953
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is the correct answer as it follows the correct relationship, i.e. 5 + 9 + 3 = 17 * 2 = 34.

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.

428 : 337 : : 749 : ?

  1. 479

  2. 20

  3. 400

  4. 8510

  5. 658
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This is the correct answer as it follows the correct relationship.  4 = 4 - 1 = 3, 2 = 2 + 1 = 3 and 8 = 8 - 1 = 7 Similarly, 749 : 7 = 7 - 1 = 6, 4 = 4 + 1 = 5 and 9 = 9 - 1 = 8.

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.

121 : 11 : : 49 : ?

  1. 7

  2. 343

  3. 98

  4. 56

  5. 42
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is the correct answer as it follows the correct relationship x2 : x, i.e. x2 = 121, x = 11. If x2 = 49, then x = 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.

121 : 10 : : 64 : ?

  1. 8

  2. 32

  3. 168

  4. 7

  5. 10
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This is the correct answer as it follows the correct relationship (x)2 : x - 1, i.e. x = 11, (x)2 = 121 and x - 1 = 10. If x = 8, then (x)2 = 64 and x - 1 = 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.

52 : 254 : : 16 : ?

  1. 61

  2. 136

  3. 32

  4. 256

  5. 64
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct answer as it follows the correct relationship.  5 = 52 = 25 and 2 = 22 = 4 Similarly, 1 = 12, 62 = 136.

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.

125 : 64 : : 426 : ?

  1. 6

  2. 144

  3. 24

  4. 12

  5. 1728
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This is the correct answer as it follows the correct relationship. 125 = (1 + 2 + 5)2 = 64 Similarly, 426 = (4 + 2 + 6)2 = 144.

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.

25 : 50 : : 36 : ?

  1. 216

  2. 48

  3. 49

  4. 18

  5. 72
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This is a wrong answer as it follows 2(x)2, where x = 6, i.e. 2 * 36 = 72. But the correct relationship is x2 : 2x2, i.e. x = 5, x2 = 25 and 2x2 = 50.

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 another side of : : while the other 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.

ACF : GIL : : PRU : ________

  1. VYA

  2. VXZ

  3. VXA

  4. VAB
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A(B)C(DE)F : G(H)I(JK)L P(Q)R(ST)U : V(W)X(YZ)A Correct option is 3.