Find the missing term: 1, 1, 2, 3, 5, 8, ? MCQ with Answer and Explanation

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Find the missing term: 1, 1, 2, 3, 5, 8, ?

A. 11

B. 12

C. 10

D. 13

Answer: Option D

Solution (By JKSSB Mock Tests)

This is the Fibonacci series where each term is the sum of the previous two: 5+8=13.

This question belongs to: Reasoning Mental Reasoning

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Question #1

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If 'P $ Q' means P is the father of Q; 'P # Q' means P is the mother of Q; 'P * Q' means P is the sister of Q, then how is B related to D in 'A $ B # C * D'?

A. Mother

B. Uncle

C. Aunt

D. Father

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Correct Answer: Option A

Explanation:
A $ B → A is father of B. B # C → B is mother of C. C * D → C is sister of D. Thus B is mother of D (and C).

This question belongs to: Reasoning Mental Reasoning

Question #2

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Find the missing term: 4, 12, 36, 108, ?

A. 540

B. 432

C. 324

D. 216

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Correct Answer: Option C

Explanation:
Each term is multiplied by 3: 4×3=12, 12×3=36, 36×3=108, so next is 108×3=324.

This question belongs to: Reasoning Mental Reasoning

Question #3

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Find the next term: 1, 2, 6, 24, 120, ?

A. 720

B. 600

C. 620

D. 840

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Correct Answer: Option A

Explanation:
1×2=2, 2×3=6, 6×4=24, 24×5=120, 120×6=720.

This question belongs to: Reasoning Mental Reasoning

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