Find the missing term: 2, 3, 5, 9, 17, ? MCQ with Answer and Explanation

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Find the missing term: 2, 3, 5, 9, 17, ?

A. 32

B. 34

C. 31

D. 33

Answer: Option D

Solution (By JKSSB Mock Tests)

Each term is multiplied by 2 and then 1 is subtracted: 2×2-1=3, 3×2-1=5, 5×2-1=9, 9×2-1=17, so next is 17×2-1=33.

This question belongs to: Reasoning Mental Reasoning

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Practice More Mental Reasoning Questions

Question #1

Statements: All rivers are lakes. Some lakes are oceans. Conclusions: I. Some oceans are rivers. II. Some lakes are rivers.

A. Only II follows

B. Neither follows

C. Both follow

D. Only I follows

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Correct Answer: Option A

Explanation:
All rivers are lakes ⇒ Some lakes are rivers. Some lakes are oceans does not imply some oceans are rivers. Only II.

This question belongs to: Reasoning Mental Reasoning

Question #2

Find the missing term: 3, 12, 48, 192, ?

A. 768

B. 672

C. 576

D. 864

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Correct Answer: Option A

Explanation:
Each term is multiplied by 4: 3×4=12, 12×4=48, 48×4=192, so next is 192×4=768.

This question belongs to: Reasoning Mental Reasoning

Question #3

Statements: All pens are books. Some books are erasers. Conclusions: I. Some pens are erasers. II. Some books are pens. Which conclusion(s) follow(s)?

A. Only I follows

B. Both I and II follow

C. Only II follows

D. Neither I nor II follows

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Correct Answer: Option C

Explanation:
From 'All pens are books' we can conclude 'Some books are pens'. But no definite relation follows between pens and erasers.

This question belongs to: Reasoning Mental Reasoning

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