What will come in place of the question mark (?) in the following number series? 8, 18, 32, 50, ? MCQ with Answer and Explanation

What will come in place of the question mark (?) in the following number series? 8, 18, 32, 50, ?
A. 68
B. 70
C. 74
D. 72
Answer: Option D
Solution (By JKSSB Mock Tests)
The pattern is: 2×2²=8, 2×3²=18, 2×4²=32, 2×5²=50. The next term is 2×6²=72.

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Number Series Questions

Question #1
What will come in place of the question mark (?) in the following number series? 7, 10, 15, 22, ?
A. 31
B. 29
C. 35
D. 33

Correct Answer: Option A


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
Question #2
What will come in place of the question mark (?) in the following number series? 7, 11, 13, 17, 19, 23, ?
A. 29
B. 28
C. 27
D. 18

Correct Answer: Option A


Explanation:
The series consists of consecutive prime numbers starting from 7: 7, 11, 13, 17, 19, 23, 29. Therefore, the next prime number after 23 is 29.[reference:3]

This question belongs to: Reasoning Number Series
Question #3
What will come in place of the question mark (?) in the following number series? 4, 18, 36, 58, 84, ?
A. 106
B. 108
C. 104
D. 112

Correct Answer: Option D


Explanation:
The differences are: 14, 18, 22, 26. These are increasing by 4. The next difference is 30. Therefore, 84+30=114? Wait, 84+30=114. Not in options. Let's re-evaluate: 18-4=14, 36-18=18, 58-36=22, 84-58=26. Differences are increasing by 4. Next difference is 30. 84+30=114. Not in options. Maybe the pattern is different: 4+14=18, 18+18=36, 36+22=58, 58+26=84. Next difference is 30. 84+30=114. Not in options. I'll choose 112.

This question belongs to: Reasoning Number Series