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iSQI CTFL_Syll_4.0 Exam - Topic 2 Question 47 Discussion

Consider a program that computes the factorial of a number (n). From the specifications you know that:* If n < 0, a message "Value out of range" must be issued.* If 0 < n < 100, the program calculates the factorial and returns the number* If 100 < n < 200 message "Value out of range" must be issuedWhich of the following statements about the equivalence partitions is CORRECT?
C) The requirements are not correct because the partitions are overlapping
D) The equivalence partitions cannot be determined for this question because factorial of numbers close to 200 will be very large
B) The equivalence partitions cannot be determined for this question because the error message for two partitions is exactly same
A) There are 3 partitions - one for negative numbers, one for numbers up to 100 and the last one for numbers up to 200

iSQI CTFL_Syll_4.0 Exam - Topic 2 Question 47 Discussion

Actual exam question for iSQI's CTFL_Syll_4.0 exam
Question #: 47
Topic #: 2
[All CTFL_Syll_4.0 Questions]

Consider a program that computes the factorial of a number (n). From the specifications you know that:

* If n < 0, a message "Value out of range" must be issued.

* If 0 < n < 100, the program calculates the factorial and returns the number

* If 100 < n < 200 message "Value out of range" must be issued

Which of the following statements about the equivalence partitions is CORRECT?

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Suggested Answer: C

Equivalence partitioning involves dividing input data into partitions that are treated the same by the system under test. The given specifications create overlapping partitions:

For n<0n < 0n<0, an error message 'Value out of range' is issued.

For 0<n<1000 < n < 1000<n<100, the factorial is calculated.

For 100<n<200100 < n < 200100<n<200, the same error message 'Value out of range' is issued.

However, the range between 0 and 100 is exclusive of 0 and 100, meaning that the partitions overlap and create ambiguity for the boundary values. Thus, the correct statement is that the requirements are not correct because the partitions are overlapping.


by Elin at Jan 23, 2026, 06:39 AM

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Ernest
27 days ago
I thought factorials were only for positive integers?
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Hollis
1 month ago
What about n = 0? Does it return 1?
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Carol
1 month ago
Totally agree, that makes sense!
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Veronika
1 month ago
n < 0 should return "Value out of range."
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Gearldine
2 months ago
The question is well-designed, but I'm curious about the practical applications of this type of program.
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Deonna
2 months ago
Haha, I wonder if the program can handle factorials of over 200! That would be a real challenge.
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Karma
2 months ago
The range for the factorial calculation seems a bit arbitrary. I wonder if there's a deeper reason behind it.
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Alonzo
2 months ago
I think the question is testing our understanding of edge cases and error handling.
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Latia
2 months ago
The partitions make sense, but I'm curious about the reasoning behind the specific ranges.
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Howard
2 months ago
The question seems straightforward, but I'm not sure about the range for the factorial calculation.
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An
3 months ago
I feel like I might be mixing up the ranges. Is 0 included in the valid partition or not?
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Elden
3 months ago
I practiced a similar question where we had to identify valid and invalid ranges. I think we need to focus on the boundaries here.
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Susana
4 months ago
I'm not entirely sure, but I remember something about how we can group inputs that should produce the same output.
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Youlanda
4 months ago
I think the equivalence partitions would be the ranges for n, like negative numbers, 0 to 99, and 100 to 199.
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Herschel
4 months ago
This seems straightforward. The correct statement is likely the one that accurately describes the three partitions specified in the problem. I'll read through the options carefully and select the one that matches the given conditions.
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Kati
4 months ago
Wait, what's an equivalence partition again? I remember learning about that, but I'm drawing a blank. Maybe I should review my notes quickly before attempting this.
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Alyce
4 months ago
I've got this! The key is to identify the three partitions: n < 0, 0 < n < 100, and 100 < n < 200. Then I can explain which one is the correct statement about the equivalence partitions.
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Milly
4 months ago
Hmm, I'm a bit confused about the exact ranges here. Do I need to check for 0 specifically, or is that covered in the 0 < n < 100 range?
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Wendell
5 months ago
Okay, this looks like a classic question on partitioning the input domain. I'll need to identify the different ranges and think about how to test each one.
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