Find the missing term: 5, 25, 125, 625, ? MCQ with Answer and Explanation

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

A. 3120

B. 3000

C. 2500

D. 3125

Answer: Option D

Solution (By JKSSB Mock Tests)

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

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Question #1

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In a row of boys, A is 15th from the left and B is 9th from the right. If they interchange their positions, A becomes 18th from the left. How many boys are there in the row?

A. 27

B. 26

C. 24

D. 25

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Correct Answer: Option B

Explanation:
After interchange A is at B's original position and is 18th from left. Originally B was 9th from right. Total = 18 + 9 - 1 = 26.

This question belongs to: Reasoning Mental Reasoning

Question #2

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

A. 3125

B. 1024

C. 1250

D. 4096

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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

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11 : 1210 :: 12 : ?

A. 1728

B. 1440

C. 1584

D. 1716

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Correct Answer: Option C

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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