What will come in place of the question mark (?) in the following number series? 7, 11, 17, 25, ? MCQ with Answer and Explanation

What will come in place of the question mark (?) in the following number series? 7, 11, 17, 25, ?
A. 33
B. 39
C. 35
D. 37
Answer: Option C
Solution (By JKSSB Mock Tests)
The differences are: 4, 6, 8. These are increasing by 2. The next difference is 10. Therefore, 25+10=35.

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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? 7, 8, 10, 13, 17, ?
A. 23
B. 21
C. 20
D. 22

Correct Answer: Option D


Explanation:
The differences are: 1, 2, 3, 4. The next difference is 5. Therefore, 17+5=22.

This question belongs to: Reasoning Number Series
Question #2
What will come in place of the question mark (?) in the following number series? 5, 9, 17, 33, ?
A. 65
B. 69
C. 67
D. 63

Correct Answer: Option A


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
What will come in place of the question mark (?) in the following number series? 3, 12, 27, 48, ?
A. 72
B. 60
C. 75
D. 63

Correct Answer: Option C


Explanation:
The pattern is: 3×1²=3, 3×2²=12, 3×3²=27, 3×4²=48. The next term is 3×5²=75.

This question belongs to: Reasoning Number Series