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

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Find the next term: 2, 6, 12, 20, 30, ?

A. 44

B. 46

C. 40

D. 42

Answer: Option D

Solution (By JKSSB Mock Tests)

Differences are 4, 6, 8, 10, 12. So next term = 30 + 12 = 42.

This question belongs to: Reasoning Mental Reasoning

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Question #1

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

A. 42

B. 46

C. 40

D. 44

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Correct Answer: Option A

Explanation:
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

Question #2

Find the missing term: 3, 7, 15, 31, 63, ?

A. 127

B. 129

C. 125

D. 131

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Correct Answer: Option A

Explanation:
Each term is multiplied by 2 and 1 added: 3×2+1=7, 7×2+1=15, 15×2+1=31, 31×2+1=63, so 63×2+1=127.

This question belongs to: Reasoning Mental Reasoning

Question #3

In a class, Anil is 12th from the top and 18th from the bottom. How many students are there in the class?

A. 28

B. 29

C. 31

D. 30

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Correct Answer: Option B

Explanation:
Total students = Top rank + Bottom rank - 1 = 12 + 18 - 1 = 29.

This question belongs to: Reasoning Mental Reasoning

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