Classification (Odd One Out) MCQs for JKSSB, SSC & Railway

Question #1

Share Report

Find the odd one out among the following numbers: 8, 27, 64, 100

A. 8

B. 64

C. 100

D. 27

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option C

Explanation:
8=2^3, 27=3^3 and 64=4^3 are perfect cubes; 100 is not a perfect cube.

This question belongs to: Reasoning Classification (Odd One Out)

Question #2

Share Report

Find the odd one out: 121, 144, 169, 185

A. 121

B. 185

C. 144

D. 169

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option B

Explanation:
121=11^2, 144=12^2 and 169=13^2 are perfect squares; 185 is not a perfect square.

This question belongs to: Reasoning Classification (Odd One Out)

Question #3

Share Report

Find the odd one out: 16, 25, 36, 48

A. 25

B. 16

C. 48

D. 36

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option C

Explanation:
16, 25 and 36 are perfect squares; 48 is not a perfect square.

This question belongs to: Reasoning Classification (Odd One Out)

Question #4

Share Report

Find the odd one out: 2, 3, 5, 9

A. 5

B. 2

C. 9

D. 3

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option C

Explanation:
2, 3 and 5 are prime numbers; 9 is a composite number.

This question belongs to: Reasoning Classification (Odd One Out)

Question #5

Share Report

Find the odd one out: 11, 13, 17, 21

A. 21

B. 17

C. 13

D. 11

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option A

Explanation:
11, 13 and 17 are prime numbers; 21 is composite (3 x 7).

This question belongs to: Reasoning Classification (Odd One Out)

Question #6

Share Report

Find the odd one out: 31, 37, 41, 49

A. 37

B. 49

C. 41

D. 31

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option B

Explanation:
31, 37 and 41 are prime numbers; 49 is composite (7 x 7).

This question belongs to: Reasoning Classification (Odd One Out)

Question #7

Share Report

Find the odd one out: 51, 53, 59, 61

A. 59

B. 61

C. 53

D. 51

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option D

Explanation:
53, 59 and 61 are prime numbers; 51 is composite (3 x 17).

This question belongs to: Reasoning Classification (Odd One Out)

Question #8

Share Report

Find the odd one out: 63, 67, 71, 73

A. 63

B. 71

C. 73

D. 67

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option A

Explanation:
67, 71 and 73 are prime numbers; 63 is composite (7 x 9).

This question belongs to: Reasoning Classification (Odd One Out)

Question #9

Share Report

Find the odd one out: 87, 89, 97, 101

A. 97

B. 101

C. 89

D. 87

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option D

Explanation:
89, 97 and 101 are prime numbers; 87 is composite (3 x 29).

This question belongs to: Reasoning Classification (Odd One Out)

Question #10

Share Report

Find the odd one out: 91, 97, 101, 103

A. 103

B. 91

C. 101

D. 97

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option B

Explanation:
97, 101 and 103 are prime numbers; 91 is composite (7 x 13).

This question belongs to: Reasoning Classification (Odd One Out)

Question #11

Share Report

Find the odd one out: 1, 4, 9, 15

A. 15

B. 4

C. 9

D. 1

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option A

Explanation:
1, 4 and 9 are perfect squares; 15 is not a perfect square.

This question belongs to: Reasoning Classification (Odd One Out)

Question #12

Share Report

Find the odd one out: 32, 64, 128, 96

A. 96

B. 64

C. 128

D. 32

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option A

Explanation:
32, 64 and 128 are powers of 2; 96 is not a pure power of 2.

This question belongs to: Reasoning Classification (Odd One Out)

Question #13

Share Report

Find the odd one out: 100, 200, 300, 350

A. 350

B. 200

C. 300

D. 100

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option A

Explanation:
100, 200 and 300 are exact multiples of 100; 350 is not a multiple of 100.

This question belongs to: Reasoning Classification (Odd One Out)

Question #14

Share Report

Find the odd one out: 12, 18, 24, 36

A. 18

B. 36

C. 24

D. 12

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option A

Explanation:
12, 24 and 36 are multiples of 12; 18 is not a multiple of 12.

This question belongs to: Reasoning Classification (Odd One Out)

Question #15

Share Report

Find the odd one out: 15, 25, 35, 45

A. 25

B. 35

C. 15

D. 45

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option A

Explanation:
25 is a perfect square; 15, 35 and 45 are not perfect squares.

This question belongs to: Reasoning Classification (Odd One Out)

Question #16

Share Report

Find the odd one out: 3, 9, 27, 64

A. 27

B. 64

C. 9

D. 3

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option B

Explanation:
3, 9 and 27 are powers of 3; 64 is not a power of 3.

This question belongs to: Reasoning Classification (Odd One Out)

Question #17

Share Report

Find the odd one out: 2, 6, 12, 24

A. 12

B. 2

C. 6

D. 24

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option D

Explanation:
2, 6 and 12 are pronic numbers formed by consecutive multiplication (1x2, 2x3, 3x4); 24 is not a pronic number.

This question belongs to: Reasoning Classification (Odd One Out)

Question #18

Share Report

Find the odd one out: 1, 3, 6, 11

A. 1

B. 3

C. 11

D. 6

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option C

Explanation:
1, 3 and 6 are triangular numbers; 11 is not a triangular number.

This question belongs to: Reasoning Classification (Odd One Out)

Question #19

Share Report

Find the odd one out: 5, 10, 15, 22

A. 5

B. 10

C. 22

D. 15

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option C

Explanation:
5, 10 and 15 are multiples of 5; 22 is not a multiple of 5.

This question belongs to: Reasoning Classification (Odd One Out)

Question #20

Share Report

Find the odd one out: 7, 14, 21, 30

A. 30

B. 7

C. 14

D. 21

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option A

Explanation:
7, 14 and 21 are multiples of 7; 30 is not a multiple of 7.

This question belongs to: Reasoning Classification (Odd One Out)

Classification (Odd One Out) MCQs

Practice Questions

More Reasoning Topics