What will come in place of the question mark (?) in the following number series? 6, 13, 22, 33, ? MCQ with Answer and Explanation

What will come in place of the question mark (?) in the following number series? 6, 13, 22, 33, ?
A. 44
B. 43
C. 46
D. 42
Answer: Option C
Solution (By JKSSB Mock Tests)
The differences are: 7, 9, 11. These are increasing by 2. The next difference is 13. Therefore, 33+13=46.

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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? 1, 3, 6, 10, 15, ?
A. 17
B. 21
C. 20
D. 18

Correct Answer: Option B


Explanation:
The differences between consecutive terms are: 3-1=2, 6-3=3, 10-6=4, 15-10=5. The differences are increasing by 1 each time. The next difference should be 6. Therefore, the next term is 15+6=21.[reference:1]

This question belongs to: Reasoning Number Series
Question #2
What will come in place of the question mark (?) in the following number series? 6, 18, 54, 162, ?
A. 648
B. 486
C. 324
D. 810

Correct Answer: Option B


Explanation:
Each term is multiplied by 3. Therefore, 162×3=486.

This question belongs to: Reasoning Number Series
Question #3
What will come in place of the question mark (?) in the following number series? 3, 4, 7, 11, 18, ?
A. 29
B. 33
C. 27
D. 31

Correct Answer: Option A


Explanation:
This is a Fibonacci-like series where each term is the sum of the previous two terms. 7+11=18, 11+18=29. The next term is 29.

This question belongs to: Reasoning Number Series