What will come in place of the question mark (?) in the following number series? 3, 8, 18, 38, ? MCQ with Answer and Explanation

Question

Share Report Error

What will come in place of the question mark (?) in the following number series? 3, 8, 18, 38, ?

A. 84

B. 82

C. 80

D. 78

Answer: Option D

Solution (By JKExamLibrary)

Each term is obtained by multiplying by 2 and adding 2. (3×2)+2=8, (8×2)+2=18, (18×2)+2=38. The next term is (38×2)+2=78.

This question belongs to: Reasoning Number Series

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Number Series Questions

Question #1

Share Report

What will come in place of the question mark (?) in the following number series? 7, 19, 35, 55, 79, ?

A. 107

B. 103

C. 99

D. 101

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option A

Explanation:
The differences are: 12, 16, 20, 24. These are increasing by 4. The next difference is 28. Therefore, 79+28=107.

This question belongs to: Reasoning Number Series

Question #2

Share Report

What will come in place of the question mark (?) in the following number series? 24, 30, 36, 42, ?

A. 60

B. 54

C. 48

D. 50

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option C

Explanation:
The series increases by 6 each time. Therefore, 42+6=48.

This question belongs to: Reasoning Number Series

Question #3

Share Report

What will come in place of the question mark (?) in the following number series? 10, 20, 30, 40, 50, ?

A. 65

B. 60

C. 55

D. 70

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option B

Explanation:
The series increases by 10 each time. Therefore, 50+10=60.

This question belongs to: Reasoning Number Series

Explore All Number Series MCQs