What will come in place of the question mark (?) in the following number series? 9, 10, 12, 15, 19, ? MCQ with Answer and Explanation

Question

Share Report Error

What will come in place of the question mark (?) in the following number series? 9, 10, 12, 15, 19, ?

A. 24

B. 25

C. 23

D. 22

Answer: Option A

Solution (By JKSSB Mock Tests)

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

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? 4, 16, 36, 64, ?

A. 100

B. 144

C. 81

D. 121

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option A

Explanation:
The series consists of squares of even numbers: 2², 4², 6², 8². The next term is 10²=100.

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? 2, 3, 6, 11, 18, ?

A. 29

B. 25

C. 31

D. 27

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option D

Explanation:
The differences are: 1, 3, 5, 7. These are consecutive odd numbers. The next difference is 9. Therefore, 18+9=27.

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? 1, 2, 6, 24, 120, ?

A. 480

B. 840

C. 720

D. 600

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option C

Explanation:
The pattern is: 1×1=1, 1×2=2, 2×3=6, 6×4=24, 24×5=120. The next term is 120×6=720.

This question belongs to: Reasoning Number Series

Explore All Number Series MCQs