Find the missing term: 5, 10, 20, 40, 80, ? MCQ with Answer and Explanation

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Find the missing term: 5, 10, 20, 40, 80, ?

A. 160

B. 140

C. 150

D. 120

Answer: Option A

Solution (By JKSSB Mock Tests)

Each term is multiplied by 2: 5×2=10, 10×2=20, 20×2=40, 40×2=80, so next is 80×2=160.

This question belongs to: Reasoning Mental Reasoning

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Practice More Mental Reasoning Questions

Question #1

Find the next term: 1, 4, 9, 16, 25, ?

A. 30

B. 42

C. 49

D. 36

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Correct Answer: Option D

Explanation:
The terms are squares of natural numbers: 1,2,3,4,5. Next term = 6^2 = 36.

This question belongs to: Reasoning Mental Reasoning

Question #2

If 2 is coded as 3, 3 as 8, 4 as 15, then 5 is coded as?

A. 20

B. 22

C. 24

D. 26

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Correct Answer: Option C

Explanation:
The code is n²-1: 2²-1=3, 3²-1=8, 4²-1=15, so 5²-1=24.

This question belongs to: Reasoning Mental Reasoning

Question #3

If FROG is coded as GORF, how is LION coded?

A. NILO

B. NOIL

C. NOLI

D. ONIL

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Correct Answer: Option B

Explanation:
The word is written in reverse order. LION reversed is NOIL.

This question belongs to: Reasoning Mental Reasoning

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