Find the missing term: 10, 18, 34, 66, ? MCQ with Answer and Explanation

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Find the missing term: 10, 18, 34, 66, ?

A. 132

B. 130

C. 126

D. 128

Answer: Option B

Solution (By JKSSB Mock Tests)

Each term is multiplied by 2 and 2 is subtracted: 10×2-2=18, 18×2-2=34, 34×2-2=66, so next is 66×2-2=130.

This question belongs to: Reasoning Mental Reasoning

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Practice More Mental Reasoning Questions

Question #1

If 'RAT' is coded as 'IZG', then 'COW' is coded as?

A. WLD

B. XLD

C. XLE

D. XMD

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Correct Answer: Option B

Explanation:
Reverse letter coding: R→I, A→Z, T→G; C→X, O→L, W→D, so COW = XLD.

This question belongs to: Reasoning Mental Reasoning

Question #2

Find the missing term: 5, 11, 23, 47, 95, ?

A. 187

B. 189

C. 188

D. 191

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Correct Answer: Option D

Explanation:
Each term is multiplied by 2 and 1 is added: 5×2+1=11, 11×2+1=23, 23×2+1=47, 47×2+1=95, so next is 95×2+1=191.

This question belongs to: Reasoning Mental Reasoning

Question #3

11 : 1210 :: 12 : ?

A. 1440

B. 1728

C. 1716

D. 1584

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Correct Answer: Option D

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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