Find the missing term in the series: 2, 6, 12, 20, 30, ? MCQ with Answer and Explanation

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Find the missing term in the series: 2, 6, 12, 20, 30, ?

A. 42

B. 46

C. 44

D. 40

Answer: Option A

Solution (By JKSSB Mock Tests)

The pattern is n(n+1): 1×2=2, 2×3=6, 3×4=12, 4×5=20, 5×6=30, so the next term is 6×7=42.

This question belongs to: Reasoning Mental Reasoning

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Practice More Mental Reasoning Questions

Question #1

What is the angle between the hands of a clock at 3:15?

A. 7.5°

B. 0°

C. 7°

D. 15°

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Correct Answer: Option A

Explanation:
Hour hand moves 0.5° per minute: at 3:15 it is at 97.5°. Minute hand is at 90°. Difference = 7.5°.

This question belongs to: Reasoning Mental Reasoning

Question #2

Find the missing term: 2, 5, 11, 23, 47, ?

A. 95

B. 94

C. 96

D. 93

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Correct Answer: Option A

Explanation:
Each term is multiplied by 2 and 1 is added: 2×2+1=5, 5×2+1=11, 11×2+1=23, 23×2+1=47, so next is 47×2+1=95.

This question belongs to: Reasoning Mental Reasoning

Question #3

In a certain code, 'COLLEGE' is written as 'DPMMFHF'. How is 'SCHOOL' written in that code?

A. TDIPPM

B. TDIPPL

C. TDHQPM

D. TEIPPM

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Correct Answer: Option A

Explanation:
Each letter +1: C→D, O→P, L→M, L→M, E→F, G→H, E→F. Similarly S→T, C→D, H→I, O→P, O→P, L→M. Thus TDIPPM.

This question belongs to: Reasoning Mental Reasoning

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