Find the odd one out: 5, 10, 15, 20, 26 MCQ with Answer and Explanation

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Find the odd one out: 5, 10, 15, 20, 26

A. 5

B. 20

C. 26

D. 15

Answer: Option C

Solution (By JKSSB Mock Tests)

All others are multiples of 5; 26 is not divisible by 5.

This question belongs to: Reasoning Mental Reasoning

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Practice More Mental Reasoning Questions

Question #1

Find the missing term: 3, 9, 27, 81, ?

A. 324

B. 243

C. 216

D. 162

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Correct Answer: Option B

Explanation:
Each term is multiplied by 3: 3×3=9, 9×3=27, 27×3=81, so 81×3=243.

This question belongs to: Reasoning Mental Reasoning

Question #2

Find the next term: 3, 5, 9, 17, 33, ?

A. 63

B. 65

C. 66

D. 64

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Correct Answer: Option B

Explanation:
Differences are 2, 4, 8, 16, 32. Next term = 33 + 32 = 65.

This question belongs to: Reasoning Mental Reasoning

Question #3

Find the missing term: 3, 10, 29, 66, ?

A. 129

B. 131

C. 125

D. 127

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Correct Answer: Option D

Explanation:
The terms follow n³ + 2: 1³+2=3, 2³+2=10, 3³+2=29, 4³+2=66, so next is 5³+2=127.

This question belongs to: Reasoning Mental Reasoning

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