Find the missing number in the series: 4, 18, ?, 100, 180, 294 MCQ with Answer and Explanation

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Find the missing number in the series: 4, 18, ?, 100, 180, 294

A. 48

B. 58

C. 60

D. 50

Answer: Option A

Solution (By JKSSB Mock Tests)

Pattern: 1³+3=4, 2³+10=18, 3³+21=48, 4³+36=100, 5³+55=180, 6³+78=294. The added terms are 3,10,21,36,55,78 (differences 7,11,15,19,23).

This question belongs to: Reasoning Logical Reasoning

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Question #1

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Statement: All pens are blue. Some blue are red. Conclusions: I. Some pens are red. II. Some red are blue.

A. Only I follows

B. Only II follows

C. Neither follows

D. Both follow

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Correct Answer: Option B

Explanation:
Conversion of 'Some blue are red' gives 'Some red are blue'. I does not follow.

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Question #2

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A is heavier than B but lighter than C. D is heavier than E and B. E is heavier than C. Who is the heaviest?

A. C

B. D

C. A

D. E

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Correct Answer: Option B

Explanation:
E > C > A > B and D > E, so D is the heaviest.

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Question #3

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If SUN is coded as TVO, then MOON is coded as ?

A. NOPP

B. NPPO

C. NQQP

D. NPOP

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Correct Answer: Option B

Explanation:
Each letter is shifted one place forward: M→N, O→P, O→P, N→O = NPPO.

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