What will come in place of the question mark (?) in the following number series? 4, 8, 16, 32, ? MCQ with Answer and Explanation

What will come in place of the question mark (?) in the following number series? 4, 8, 16, 32, ?
A. 64
B. 48
C. 72
D. 56
Answer: Option A
Solution (By JKSSB Mock Tests)
Each term is multiplied by 2. Therefore, 32×2=64.

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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, 11, 13, 17, 19, 23, ?
A. 29
B. 18
C. 27
D. 28

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 #2
What will come in place of the question mark (?) in the following number series? 3, 5, 8, 12, 17, ?
A. 24
B. 23
C. 21
D. 22

Correct Answer: Option B


Explanation:
The differences are: 2, 3, 4, 5. The next difference is 6. Therefore, 17+6=23.

This question belongs to: Reasoning Number Series
Question #3
What will come in place of the question mark (?) in the following number series? 3, 8, 18, 38, ?
A. 82
B. 80
C. 84
D. 78

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