Find the missing term: 2, 3, 10, 39, ? MCQ with Answer and Explanation

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Find the missing term: 2, 3, 10, 39, ?

A. 180

B. 160

C. 172

D. 168

Answer: Option C

Solution (By JKSSB Mock Tests)

Pattern: ×1+1=3, ×2+4=10, ×3+9=39, so next is ×4+16=172.

This question belongs to: Reasoning Mental Reasoning

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Practice More Mental Reasoning Questions

Question #1

Find the missing term: 5, 7, 11, 19, 35, ?

A. 51

B. 60

C. 67

D. 65

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Correct Answer: Option C

Explanation:
Differences are +2, +4, +8, +16, each doubling; the next difference is +32, so 35+32=67.

This question belongs to: Reasoning Mental Reasoning

Question #2

Find the missing number: 1, 4, 27, 256, ?

A. 3125

B. 4096

C. 1250

D. 1024

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Correct Answer: Option A

Explanation:
The pattern is 1^1, 2^2, 3^3, 4^4. Next term = 5^5 = 3125.

This question belongs to: Reasoning Mental Reasoning

Question #3

11 : 1210 :: 12 : ?

A. 1728

B. 1584

C. 1440

D. 1716

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Correct Answer: Option B

Explanation:
The relation is n^2(n-1). 11^2 × 10 = 1210; 12^2 × 11 = 144 × 11 = 1584.

This question belongs to: Reasoning Mental Reasoning

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