Find the missing term: 100, 95, 85, 70, 50, ? MCQ with Answer and Explanation

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Find the missing term: 100, 95, 85, 70, 50, ?

A. 20

B. 25

C. 35

D. 30

Answer: Option B

Solution (By JKSSB Mock Tests)

The differences are -5, -10, -15, -20, so the next difference is -25: 50-25=25.

This question belongs to: Reasoning Mental Reasoning

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Practice More Mental Reasoning Questions

Question #1

If APPLE is coded as BQQMF, how is MANGO coded?

A. NBOIP

B. NBOHP

C. NBOHQ

D. NBPHP

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Correct Answer: Option B

Explanation:
Each letter is shifted forward by 1: A→B, P→Q, P→Q, L→M, E→F; M→N, A→B, N→O, G→H, O→P gives NBOHP.

This question belongs to: Reasoning Mental Reasoning

Question #2

Statements: All fruits are vegetables. All vegetables are plants. Conclusions: I. All fruits are plants. II. Some plants are vegetables.

A. Neither follows

B. Only I follows

C. Both follow

D. Only II follows

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Correct Answer: Option C

Explanation:
All fruits are vegetables and all vegetables are plants ⇒ All fruits are plants. Also some plants are vegetables (conversion of all vegetables are plants). Both follow.

This question belongs to: Reasoning Mental Reasoning

Question #3

Find the missing term: 3, 7, 15, 31, 63, ?

A. 131

B. 127

C. 129

D. 125

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Correct Answer: Option B

Explanation:
Each term is multiplied by 2 and 1 added: 3×2+1=7, 7×2+1=15, 15×2+1=31, 31×2+1=63, so 63×2+1=127.

This question belongs to: Reasoning Mental Reasoning

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