What will come in place of the question mark (?) in the following number series? 1, 3, 9, 27, ? MCQ with Answer and Explanation

Question

Share Report Error

What will come in place of the question mark (?) in the following number series? 1, 3, 9, 27, ?

A. 81

B. 108

C. 54

D. 72

Answer: Option A

Solution (By JKExamLibrary)

Each term is multiplied by 3. Therefore, 27×3=81.

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? 2, 6, 12, 20, 30, ?

A. 46

B. 42

C. 40

D. 44

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option B

Explanation:
The differences are: 4, 6, 8, 10. These are increasing by 2. The next difference is 12. Therefore, 30+12=42.

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? 5, 9, 17, 33, ?

A. 69

B. 67

C. 65

D. 63

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option C

Explanation:
Each term is obtained by multiplying by 2 and subtracting 1. (5×2)-1=9, (9×2)-1=17, (17×2)-1=33. The next term is (33×2)-1=65.

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? 3, 8, 18, 38, ?

A. 84

B. 80

C. 82

D. 78

View Answer & Solution Discuss

Get Complete Subject PDF for Reasoning

Correct Answer: Option D

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

Explore All Number Series MCQs