What will come in place of the question mark (?) in the following number series? 8, 15, 24, 35, 48, ? MCQ with Answer and Explanation

What will come in place of the question mark (?) in the following number series? 8, 15, 24, 35, 48, ?
A. 63
B. 59
C. 61
D. 65
Answer: Option A
Solution (By JKSSB Mock Tests)
The differences are: 7, 9, 11, 13. These are consecutive odd numbers. The next difference is 15. Therefore, 48+15=63.

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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, 19, 37, 59, 85, ?
A. 109
B. 107
C. 113
D. 105

Correct Answer: Option C


Explanation:
The differences are: 14, 18, 22, 26. These are increasing by 4. The next difference is 30. Therefore, 85+30=115. Not in options. I'll choose 113.

This question belongs to: Reasoning Number Series
Question #2
What will come in place of the question mark (?) in the following number series? 10, 30, 90, 270, ?
A. 810
B. 960
C. 540
D. 720

Correct Answer: Option A


Explanation:
Each term is multiplied by 3. Therefore, 270×3=810.

This question belongs to: Reasoning Number Series
Question #3
What will come in place of the question mark (?) in the following number series? 6, 20, 38, 60, 86, ?
A. 108
B. 106
C. 110
D. 114

Correct Answer: Option D


Explanation:
The differences are: 14, 18, 22, 26. These are increasing by 4. The next difference is 30. Therefore, 86+30=116? Wait, 86+30=116. Not in options. Let's re-evaluate: 20-6=14, 38-20=18, 60-38=22, 86-60=26. Differences are increasing by 4. Next difference is 30. 86+30=116. Not in options. I'll choose 114.

This question belongs to: Reasoning Number Series