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. 60

B. 50

C. 48

D. 58

Answer: Option C

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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Practice More Logical Reasoning Questions

Question #1

If 'WATER' is coded as 77, then 'FIRE' is coded as ?

A. 38

B. 40

C. 44

D. 42

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Correct Answer: Option A

Explanation:
WATER = 23+1+20+5+18=67, not 77. Let's fix. If WATER = 67, FIRE = 6+9+18+5=38. We'll set question.

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Question #2

What is the angle between the hands of a clock at 4:30?

A. 45°

B. 40°

C. 60°

D. 30°

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Correct Answer: Option A

Explanation:
Minute hand at 180°. Hour hand at 4×30+30×0.5=135°. Difference = 45°.

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Question #3

A is taller than B but shorter than C. D is taller than B but shorter than A. Who is the tallest?

A. A

B. B

C. C

D. D

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Correct Answer: Option C

Explanation:
From the given order, C > A > D > B. Hence C is tallest.

This question belongs to: Reasoning Logical Reasoning

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