This PCEP practice question tests your understanding of data types, variables, basic i/o and operators. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Given the following code, which of the following statements are true after execution? (Choose three.)
x = 10 y = 3.0 z = x / y w = x // y
The expression x % y is valid.
Modulo works with floats.
The value of z is approximately 3.33 (type float).
Division of int by float yields float.
The type of w is int.
Why wrong: Floor division with a float operand returns a float.
The expression x / y returns an integer.
Why wrong: True division always returns a float.
The value of w is 3.0.
10 // 3.0 = 3.0.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
The expression x % y is valid.
Option A is correct because the modulo operator % works with both integers and floats in Python. Here, x is an int and y is a float, so x % y is valid and returns a float result (the remainder of the division).
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
The expression x % y is valid.
Why this is correct
Modulo works with floats.
Related concept
Read the scenario before looking for a memorised answer.
The value of z is approximately 3.33 (type float).
Why this is correct
Division of int by float yields float.
Related concept
Read the scenario before looking for a memorised answer.
The type of w is int.
Why it's wrong here
Floor division with a float operand returns a float.
The expression x / y returns an integer.
Why it's wrong here
True division always returns a float.
The value of w is 3.0.
Why this is correct
10 // 3.0 = 3.0.
Related concept
Read the scenario before looking for a memorised answer.
Common exam traps
Cisco often tests the misconception that floor division (//) returns an int when one operand is a float, or that true division (/) can return an integer, leading candidates to incorrectly select options C or D.
Detailed technical explanation
In Python 3, the / operator performs true division and always yields a float, while // performs floor division and returns a float if at least one operand is a float. This behavior is defined in PEP 238 and differs from Python 2, where / could return an integer for integer operands. In real-world scenarios, this distinction matters when handling mixed-type arithmetic in data processing or financial calculations to avoid unintended type conversions.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A practitioner preparing for the PCEP exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
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FAQ
Data Types, Variables, Basic I/O and Operators — This question tests Data Types, Variables, Basic I/O and Operators — Read the scenario before looking for a memorised answer..
The correct answer is: The expression x % y is valid. — Option A is correct because the modulo operator % works with both integers and floats in Python. Here, x is an int and y is a float, so x % y is valid and returns a float result (the remainder of the division).
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 25, 2026
This PCEP practice question is part of Courseiva's free Python Institute certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the PCEP exam.
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