What value will be assigned to the x variable?
PCEP-30-02 Exam QuestionsBrowse all questions from this exam
PCEP-30-02 Exam - Question 133
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Correct Answer: D
To determine the value assigned to x, let's break down the logical expression step by step. Given z = 2 and y = 1, the expression to evaluate is x = y < z or z > y and y > z or z < y. First, we evaluate the individual comparisons: y < z (1 < 2) is True, z > y (2 > 1) is True, y > z (1 > 2) is False, and z < y (2 < 1) is False. Substituting these values, the expression becomes x = True or True and False or False. According to the precedence rules in programming languages, the 'and' operator is evaluated before the 'or' operator. So we first evaluate True and False, which gives False. Now the expression simplifies to x = True or False or False. Evaluating the 'or' operations: True or False is True, and True or False is True. Therefore, the value assigned to x is True.
Discussion
4 commentsellene
Jun 13, 2024True and False Since the AND operator requires both conditions to be True for the whole expression to be True, and one of them is False, the overall expression evaluates to False. Therefore, the value assigned to 𝑥 x will be False, making the correct answer C (False). So, the provided answer key is incorrect; it should be C (False) instead of D (True).
ellene
Jun 16, 2024Let's break down the expression: x = y < z or (z > y and y > z) or z < y Now, we evaluate the sub-expressions: y < z evaluates to 1 < 2, which is True. z > y evaluates to 2 > 1, which is True. y > z evaluates to 1 > 2, which is False. z < y evaluates to 2 < 1, which is False. So, plugging these values into the expression, we get: x = True or (True and False) or False Evaluate the and expression: True and False is False. Now the expression becomes: x = True or False or False Finally, evaluate the or expressions: True or False is True. So, the value assigned to x will be True. The correct answer is: D. True
mldprasadOption: D
Nov 17, 2024True or True and False or False Applying logical operators: Evaluate and first (higher precedence): True and False evaluates to False. The expression now becomes: True or False or False. Evaluate or from left to right: True or False evaluates to True. True or False evaluates to True.
akumoOption: D
Mar 20, 2025True or (True and False) or False True or False or False The or operator returns True if at least one of the operands is True.
Knight82Option: A
Apr 27, 2025ok this is all wrong. First work from left to right, people. let's evaluate y<z or z>y: True or True = True y>z or z<y: False or False = False Now is the and operator: True and False is False if we memorized the and or operators in the python Essential book. I ran this in Python intepretor and it came out false. I thought I was crazy for the moment. 1.