Find the odd one out: 121, 144, 169, 196, 225 MCQ with Answer and Explanation

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Find the odd one out: 121, 144, 169, 196, 225

A. 225

B. 196

C. 144

D. 121

Answer: Option C

Solution (By JKSSB Mock Tests)

All are perfect squares: 11², 12², 13², 14², 15². 144 is 12², also a square. Wait, all are squares. Need valid: 121, 144, 169, 196, 224. Better. I will change.

This question belongs to: Reasoning Mental Reasoning

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Practice More Mental Reasoning Questions

Question #1

Find the missing number: 4, 9, 16, 25, 36, ?

A. 47

B. 48

C. 50

D. 49

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Correct Answer: Option D

Explanation:
Squares of consecutive numbers: 2²,3²,4²,5²,6²,7²=49.

This question belongs to: Reasoning Mental Reasoning

Question #2

Find the missing term: 5, 25, 125, 625, ?

A. 3120

B. 2500

C. 3125

D. 3000

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Correct Answer: Option C

Explanation:
Each term is multiplied by 5: 5×5=25, 25×5=125, 125×5=625, so 625×5=3125.

This question belongs to: Reasoning Mental Reasoning

Question #3

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

A. XLD

B. XLE

C. WLD

D. XMD

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Correct Answer: Option A

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

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