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

Question

Share Report Error

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

A. 60

B. 70

C. 65

D. 55

Answer: Option A

Solution (By JKExamLibrary)

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

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, 3, 7, 15, ?

A. 32

B. 31

C. 30

D. 35

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option B

Explanation:
Each term is obtained by multiplying the previous term by 2 and adding 1. (1×2)+1=3, (3×2)+1=7, (7×2)+1=15. The next term is (15×2)+1=31.

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? 3, 8, 18, 38, ?

A. 78

B. 80

C. 82

D. 84

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option A

Explanation:
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

Question #3

Share Report

What will come in place of the question mark (?) in the following number series? 2, 8, 18, 32, ?

A. 48

B. 40

C. 42

D. 50

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option D

Explanation:
The pattern is: 2×1²=2, 2×2²=8, 2×3²=18, 2×4²=32. The next term is 2×5²=50.

This question belongs to: Reasoning Number Series

Explore All Number Series MCQs