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PCEP-30-02 Exam Prep: In-Depth Practice on Relational Operators in Python

PCEP Certification Practice Test - Questions, Answers and Explanations

This comprehensive set of questions and explanations covers the fundamental topic of choosing operators and data types adequate to the problem, focusing on relational operators (==, !=, >, >=, <, <=). This diverse set of interactions enhances understanding and prepares for the PCEP-30-02 examination.

Question 1: What is the result of the following relational expression?

5 == 5
  1. True
  2. False
  3. None
  4. 0
▼

Answer: a) True

Explanation: The == operator checks for equality. Since 5 is equal to 5, the result is True.

Question 2: What does the following relational expression evaluate to?

10 != 5
  1. True
  2. False
  3. None
  4. 0
▼

Answer: a) True

Explanation: The != operator checks for inequality. Since 10 is not equal to 5, the result is True.

Question 3: Which of the following relational expressions is False?

  1. 8 > 3
  2. 4 >= 4
  3. 7 < 2
  4. 9 <= 10
▼

Answer: c) 7 < 2

Explanation: The < operator checks if the left operand is less than the right operand. Since 7 is not less than 2, the result is False.

Question 4: Which of the following relational expressions are True? (Select all that apply)

  1. 3 <= 3
  2. 5 != 5
  3. 8 > 2
  4. 7 == 7
▼

Answer: a) 3 <= 3, c) 8 > 2, d) 7 == 7

Explanation: 3 <= 3 is True, 8 > 2 is True, and 7 == 7 is True.

Question 5: Which of the following relational expressions are False? (Select all that apply).

  1. 10 == 10
  2. 6 != 6
  3. 2 > 3
  4. 4 <= 1
▼

Answer:b) 6 != 6, c) 2 > 3, d) 4 <= 1

Explanation: 6 != 6 is False, 2 > 3 is False, and 4 <= 1 is False.

Question 6: Place the following relational operators in the correct order of their typical usage: ==, >, <=.

  1. ==
  2. <=
  3. >
▼

Answer:

  1. ==
  2. >
  3. <=

Explanation: In relational expressions, == is used to check for equality, > is used to check if the left operand is greater than the right operand, and <= is used to check if the left operand is less than or equal to the right operand.

Question 7: Arrange the following relational expressions to evaluate the expression x = 5 > 3 and 2 == 2 correctly: 5 > 3, x = y and 2 == 2, y = 5 > 3.

▼

Answer:

  1. 5 > 3 (evaluates to True)
  2. y = 5 > 3 (evaluates to True)
  3. x = y and 2 == 2 (evaluates to True)

Explanation: First, evaluate 5 > 3 to get True. Then, use y = True and evaluate x = y and 2 == 2 to get True.

Question 8: The operator that checks for inequality is ______.

▼

Answer: !=

Explanation: The != operator checks if the two operands are not equal.

Question 9: The expression 7 >= 7 is evaluated by performing the ______ operation.

▼

Answer: >=

Explanation: The >= operator checks if the left operand is greater than or equal to the right operand.

Question 10: Sort the following operations to correctly evaluate 3 <= 4 and 5 == 5: 3 <= 4, 5 == 5, True and True.

▼

Answer:

  1. 3 <= 4 (result: True)
  2. 5 == 5 (result: True)
  3. True and True (result: True)

Explanation: The results of the operations are evaluated in the order of their precedence: <=, ==, and and.

Question 11: Sort the following expressions in ascending order of their results: 6 != 7, 4 == 4, 3 < 2, 5 >= 5.

▼

Answer:

  • 3 < 2 (result: False)
  • 6 != 7 (result: True)
  • 4 == 4 (result: True)
  • 5 >= 5 (result: True)

Explanation: The results of the operations are False, True, True, and True respectively when evaluated correctly.

Question 12: Fill in the missing code to correctly compute the result of 4 < 5 and 6 >= 6.

result = 4 ______ 5 and 6 ______ 6
▼

Answer: <, >=

Explanation: The < operator checks if the left operand is less than the right operand. The >= operator checks if the left operand is greater than or equal to the right operand. The correct code is result = 4 < 5 and 6 >= 6.

Question 13: Fill in the missing code to correctly compute the result of 7 != 8 or 9 == 10.

result = 7 ______ 8 or 9 ______ 10
▼

Answer: !=, ==

Explanation: The != operator checks for inequality. The == operator checks for equality. The correct code is result = 7 != 8 or 9 == 10.

Question 14: Insert the correct operator to evaluate not (a == b) where a = 1 and b = 2.

a = 1
b = 2
result = not (a ______ b)
▼

Answer: ==

Explanation: The == operator checks for equality. The correct code is result = not (a == b).

Question 15: Insert the correct operator to evaluate a != b where a = 3 and b = 4.

a = 3
b = 4
result = a ______ b
▼

Answer: !=

Explanation: The != operator checks for inequality. The correct code is result = a != b.

Question 16: What is the result of the following expression?

5 < 10
  1. True
  2. False
  3. None
  4. 0
▼

Answer: a) True

Explanation: The < operator checks if the left operand is less than the right operand. Since 5 is less than 10, the result is True.

Question 17: Which of the following expressions is True?

  1. 10 <= 10
  2. 5 == 6
  3. 8 != 8
  4. 3 > 7
▼

Answer: a) 10 <= 10

Explanation: The <= operator checks if the left operand is less than or equal to the right operand. Since 10 is equal to 10, the result is True.

Question 18: Which of the following statements about relational operators are true? (Select all that apply)

  1. == checks for equality.
  2. != checks for inequality.
  3. > checks if the left operand is greater than or equal to the right operand.
  4. <= checks if the left operand is less than or equal to the right operand.
▼

Answer: a) == checks for equality., b) != checks for inequality., d) <= checks if the left operand is less than or equal to the right operand.

Explanation: == checks for equality, != checks for inequality, and <= checks if the left operand is less than or equal to the right operand.

Question 19: What are the results of the following code? (Select all that apply)

a = 3 >= 2
b = 4 == 4
c = 5 < 3
  1. a is True
  2. b is True
  3. c is False
  4. c is True
▼

Answer: a) a is True, b) b is True, c) c is False

Explanation: 3 >= 2 is True, 4 == 4 is True, and 5 < 3 is False.

Question 20: Arrange the following relational operators in order of their typical usage: !=, <=, >.

  1. !=
  2. <=
  3. >
▼

Answer:

  1. !=
  2. >
  3. <=

Explanation: In relational expressions, != is used to check for inequality, > is used to check if the left operand is greater than the right operand, and <= is used to check if the left operand is less than or equal to the right operand.

Question 21: Arrange the following relational expressions to evaluate the expression x = 8 >= 7 and 3 != 2 correctly: 8 >= 7, x = y and 3 != 2, y = 8 >= 7.

▼

Answer:

  1. y = 8 >= 7 (evaluates to True)
  2. 8 >= 7 (evaluates to True)
  3. x = y and 3 != 2 (evaluates to True)

Explanation: First, evaluate 8 >= 7 to get True. Then, use y = True and evaluate x = y and 3 != 2 to get True.

Question 22: The operator that checks if two values are equal is ______.

▼

Answer: ==

Explanation: The == operator checks if the two operands are equal.

Question 23: The expression 7 <= 8 is evaluated by performing the ______ operation.

▼

Answer: <=

Explanation: The <= operator checks if the left operand is less than or equal to the right operand.

Question 24: Sort the following operations to correctly evaluate 4 >= 3 and 5 == 5: 4 >= 3, 5 == 5, True and True.

▼

Answer:

  1. 4 >= 3 (result: True)
  2. 5 == 5 (result: True)
  3. True and True (result: True)

Explanation: The results of the operations are evaluated in the order of their precedence: >=, ==, and and.

Question 25: Sort the following expressions in ascending order of their results: 7 != 7, 6 == 6, 5 < 4, 9 >= 9.

▼

Answer:

  • 5 < 4 (result: False)
  • 7 != 7 (result: False)
  • 6 == 6 (result: True)
  • 9 >= 9 (result: True)

Explanation: The results of the operations are False, False, True, and True respectively when evaluated correctly.



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