Find the missing term: 4, 12, 36, 108, ? MCQ with Answer and Explanation

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

A. 216

B. 324

C. 432

D. 540

Answer: Option B

Solution (By JKSSB Mock Tests)

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

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Practice More Mental Reasoning Questions

Question #1

Find the next number: 4, 5, 12, 39, 160, ?

A. 810

B. 805

C. 820

D. 815

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Correct Answer: Option B

Explanation:
Pattern: ×1+1, ×2+2, ×3+3, ×4+4, ×5+5: 4×1+1=5, 5×2+2=12, 12×3+3=39, 39×4+4=160, 160×5+5=805.

This question belongs to: Reasoning Mental Reasoning

Question #2

Find the odd one out: 10, 20, 30, 45, 50

A. 50

B. 45

C. 30

D. 20

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Correct Answer: Option B

Explanation:
All others are exact multiples of 10; 45 is not divisible by 10.

This question belongs to: Reasoning Mental Reasoning

Question #3

A man is facing North-West. He turns 90° in the clockwise direction and then 135° in the anti-clockwise direction. Which direction is he facing now?

A. North

B. East

C. South

D. West

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Correct Answer: Option A

Explanation:
Start North-West. +90° CW → North-East. Then 135° ACW from North-East: 135° ACW lands on North (North-East to North is 45°, to North-West 90°, to West 135°). Wait: from North-East ACW 135° is towards North then West: 45° to North, another 90° to West. So West. Option B.

This question belongs to: Reasoning Mental Reasoning

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