Find the missing term: 1, 4, 13, 40, ? MCQ with Answer and Explanation

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Find the missing term: 1, 4, 13, 40, ?

A. 119

B. 121

C. 120

D. 122

Answer: Option B

Solution (By JKSSB Mock Tests)

Each term is multiplied by 3 and 1 added: 1×3+1=4, 4×3+1=13, 13×3+1=40, so 40×3+1=121.

This question belongs to: Reasoning Mental Reasoning

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Practice More Mental Reasoning Questions

Question #1

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Pointing to a boy, a man says, 'He is the son of my father's only daughter.' How is the boy related to the man?

A. Nephew

B. Brother

C. Cousin

D. Son

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Correct Answer: Option A

Explanation:
The father's only daughter is the man's sister. Her son is the man's nephew.

This question belongs to: Reasoning Mental Reasoning

Question #2

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Statements: All cats are animals. All animals are living things. Conclusions: I. All cats are living things. II. Some living things are cats. III. All living things are cats. Which conclusions follow?

A. All

B. Only I and II

C. Only II and III

D. Only I

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Correct Answer: Option B

Explanation:
Since all cats are animals and all animals are living things, all cats are living things. Also, some living things are cats follows. Conclusion III is invalid.

This question belongs to: Reasoning Mental Reasoning