What will come in place of the question mark (?) in the following number series? 6, 11, 18, 27, 38, 51, ? MCQ with Answer and Explanation

What will come in place of the question mark (?) in the following number series? 6, 11, 18, 27, 38, 51, ?
A. 66
B. 68
C. 62
D. 64
Answer: Option A
Solution (By JKExamLibrary)
The differences are: 5, 7, 9, 11, 13. These are consecutive odd numbers. The next difference is 15. Therefore, 51+15=66.

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Practice More Number Series Questions

Question #1
What will come in place of the question mark (?) in the following number series? 5, 10, 15, 20, ?
A. 24
B. 30
C. 22
D. 25

Correct Answer: Option D


Explanation:
The series is increasing by 5 each time. Therefore, the next term is 20+5=25.[reference:7]

This question belongs to: Reasoning Number Series
Question #2
What will come in place of the question mark (?) in the following number series? 5, 12, 21, 32, ?
A. 41
B. 43
C. 47
D. 45

Correct Answer: Option D


Explanation:
The differences are: 7, 9, 11. These are increasing by 2. The next difference is 13. Therefore, 32+13=45.

This question belongs to: Reasoning Number Series
Question #3
What will come in place of the question mark (?) in the following number series? 7, 10, 15, 22, ?
A. 35
B. 31
C. 29
D. 33

Correct Answer: Option B


Explanation:
The differences are: 3, 5, 7. These are consecutive odd numbers. The next difference is 9. Therefore, 22+9=31.

This question belongs to: Reasoning Number Series