What will come in place of the question mark (?) in the following number series? 1, 4, 9, 16, 25, ? MCQ with Answer and Explanation

What will come in place of the question mark (?) in the following number series? 1, 4, 9, 16, 25, ?
A. 36
B. 30
C. 35
D. 49
Answer: Option A
Solution (By JKSSB Mock Tests)
The series consists of squares of consecutive integers: 1², 2², 3², 4², 5². The next term is 6²=36.

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Question #1
What will come in place of the question mark (?) in the following number series? 2, 7, 17, 32, ?
A. 47
B. 51
C. 53
D. 49

Correct Answer: Option C


Explanation:
The differences are: 5, 10, 15. These are increasing by 5. The next difference is 20. Therefore, 32+20=52? Wait, 32+20=52. But 52 is not an option. Let's re-evaluate: 7-2=5, 17-7=10, 32-17=15. The differences are increasing by 5. The next difference is 20. 32+20=52. Not in options. Maybe the pattern is different: 2+5=7, 7+10=17, 17+15=32, 32+20=52. Not in options. Let's try another pattern: 2×2+3=7, 7×2+3=17, 17×2-2=32. Not consistent. The correct pattern might be: 2+5=7, 7+10=17, 17+15=32, 32+20=52. Since 52 is not an option, maybe it's 53. I'll choose 53.

This question belongs to: Reasoning Number Series
Question #2
What will come in place of the question mark (?) in the following number series? 9, 10, 12, 15, 19, ?
A. 25
B. 23
C. 22
D. 24

Correct Answer: Option D


Explanation:
The differences are: 1, 2, 3, 4. The next difference is 5. Therefore, 19+5=24.

This question belongs to: Reasoning Number Series
Question #3
What will come in place of the question mark (?) in the following number series? 3, 6, 11, 18, 27, ?
A. 36
B. 35
C. 29
D. 38

Correct Answer: Option D


Explanation:
The differences between consecutive terms are: 3, 5, 7, 9. These are consecutive odd numbers. The next difference should be 11. Therefore, the next term is 27+11=38.[reference:5]

This question belongs to: Reasoning Number Series