Python MCQs: Variable Names and Operators Chapter

21

What is the purpose of the modulo operator (%) in Python?

A) Finding the exponent B) Multiplying numbers C) Calculating the square root D) Calculating the remainder

Discuss

Answer & Solution

Answer: Option D

Solution:

The % operator calculates the remainder of division.

22

What is the result of round(3.75) ?

A) 3 B) 3.75 C) 4 D) 3.5

Discuss

Answer & Solution

Answer: Option C

Solution:

The round() function rounds a floating-point number to the nearest integer.

23

What is the output of this expression, 3*1**3?

A) 27 B) 9 C) 3 D) 1

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

24

What is the purpose of the == operator in Python?

A) Assignment B) Comparison for equality C) Exponentiation D) Concatenation

Discuss

Answer & Solution

Answer: Option B

Solution:

The == operator is used to compare if two values are equal.

25

Which of the following is invalid?

A) _a = 1 B) __a = 1 C) __str__ = 1 D) none of the mentioned

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

26

What is the result of not (5 > 3) ?

A) True B) False C) None D) Error

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Answer & Solution

Answer: Option B

Solution:

The not operator returns the opposite of its operand's boolean value.

27

Which of the following is a valid way to comment a single line in Python?

A) \ comment B) / comment C)  D) # comment

Discuss

Answer & Solution

Answer: Option D

Solution:

The # symbol is used to comment a single line in Python.

28

Which one of the following has the same precedence level?

A) Addition and Subtraction B) Multiplication, Division and Addition C) Multiplication, Division, Addition and Subtraction D) Addition and Multiplication

Discuss

Answer & Solution

Answer: Option A

Solution:

In Python, Addition (+) and Subtraction (-) operators have the same precedence level.

Multiplication (*) and Division (/) operators have a higher precedence than Addition and Subtraction.

When an expression contains operators with the same precedence, they are evaluated from left to right.

For example, in the expression 3 + 5 - 2, the addition and subtraction are performed from left to right.

29

Which of the following is an invalid variable?

A) my_string_1 B) 1st_string C) foo D) _

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

30

What is the result of "hello" * 3 ?

A) "hellohellohello" B) "hello3" C) "3hello" D) "hhheeellllllooo"

Discuss

Answer & Solution

Answer: Option A

Solution:

The * operator repeats a string a specified number of times.