What will come in place of the question mark (?) in the following number series? 11, 17, 23, 29, ? MCQ with Answer and Explanation

What will come in place of the question mark (?) in the following number series? 11, 17, 23, 29, ?
A. 31
B. 33
C. 37
D. 35
Answer: Option C
Solution (By JKSSB Mock Tests)
The series consists of consecutive prime numbers. The next prime number after 29 is 31? Wait, 31 is prime. But 37 is also prime. Let's check: 11, 17, 23, 29 are primes. The next prime after 29 is 31. So the answer is 31.

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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, 12, 19, 28, ?
A. 41
B. 39
C. 35
D. 37

Correct Answer: Option B


Explanation:
The differences are: 5, 7, 9. These are consecutive odd numbers. The next difference is 11. Therefore, 28+11=39.

This question belongs to: Reasoning Number Series
Question #2
What will come in place of the question mark (?) in the following number series? 1, 9, 25, 49, ?, 121
A. 81
B. 100
C. 64
D. 72

Correct Answer: Option A


Explanation:
The series consists of squares of odd numbers: 1², 3², 5², 7², 9², 11². The missing term is 9²=81.[reference:18]

This question belongs to: Reasoning Number Series
Question #3
What will come in place of the question mark (?) in the following number series? 5, 8, 13, 20, 29, ?
A. 36
B. 42
C. 40
D. 38

Correct Answer: Option C


Explanation:
The differences are: 3, 5, 7, 9. These are consecutive odd numbers. The next difference is 11. Therefore, 29+11=40.

This question belongs to: Reasoning Number Series