What will come in place of the question mark (?) in the following number series? 6, 18, 34, 54, 78, ? MCQ with Answer and Explanation

Question

Share Report Error

What will come in place of the question mark (?) in the following number series? 6, 18, 34, 54, 78, ?

A. 102

B. 100

C. 106

D. 98

Answer: Option C

Solution (By JKExamLibrary)

The differences are: 12, 16, 20, 24. These are increasing by 4. The next difference is 28. Therefore, 78+28=106.

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? 1, 8, 27, 64, 125, ?

A. 216

B. 169

C. 196

D. 144

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option A

Explanation:
The series consists of cubes of consecutive integers: 1³, 2³, 3³, 4³, 5³. The next term is 6³=216.

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? 9, 10, 12, 15, 19, ?

A. 23

B. 25

C. 22

D. 24

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option D

Explanation:
The differences are: 1, 2, 3, 4. The next difference is 5. Therefore, 19+5=24.

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? 13, 26, 52, 104, ?

A. 208

B. 182

C. 234

D. 156

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option A

Explanation:
Each term is multiplied by 2. Therefore, 104×2=208.

This question belongs to: Reasoning Number Series

Explore All Number Series MCQs