MCQs for Python Data Types and Numeric Types Chapter

31

What will be the output of the following Python code?

>>>str="hello"
>>>str[:2]
>>>

A) he B) lo C) olleh D) hello

Discuss

Answer & Solution

Answer: Option A

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

32

What does ~~~~~~5 evaluate to?

A) +5 B) -11 C) +11 D) -5

Discuss

Answer & Solution

Answer: Option A

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33

What is the result of abs(3 + 4j) ?

A) 3 B) 4 C) 5 D) 7

Discuss

Answer & Solution

Answer: Option C

Solution:

In Python, the abs() function returns the magnitude (modulus) of a complex number.

A complex number is written in the form a + bj, where a is the real part and b is the imaginary part.

The magnitude of a complex number is calculated using the formula √(a² + b²).

For the complex number 3 + 4j:

Real part = 3
Imaginary part = 4

Magnitude = √(3² + 4²) = √(9 + 16) = √25 = 5.

Therefore, abs(3 + 4j) returns 5.

Hence, the correct answer is Option C: 5.

34

What is the result of divmod(10, 3) ?

A) (3, 1) B) (3, 0) C) (3, 3) D) (10, 3)

Discuss

Answer & Solution

Answer: Option A

Solution:

The divmod() function returns the quotient and remainder of division.

35

What is the result of len("Hello, World!") ?

A) 13 B) 12 C) 14 D) "Hello, World!"

Discuss

Answer & Solution

Answer: Option A

Solution:

The len() function returns the length of a sequence, such as a string.

36

What data type is the object below?

L = [1, 23, 'hello', 1]

A) list B) dictionary C) array D) tuple

Discuss

Answer & Solution

Answer: Option A

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37

What is the result of int("5") + float("2.5") ?

A) 7.5 B) 8 C) 7 D) 5.2

Discuss

Answer & Solution

Answer: Option A

Solution:

The int() and float() functions convert strings to the respective numeric types.

38

What is the result of round(0.5) - round(-0.5)?

A) 1.0 B) 2.0 C) 0.0 D) Value depends on Python version

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Answer & Solution

Answer: Option D

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39

What is the result of round(3.14159, 2) ?

A) 3.14 B) 3.15 C) 3.1 D) 3.141

Discuss

Answer & Solution

Answer: Option A

Solution:

The round() function rounds a number to a specified number of decimal places.

40

Which of the following is incorrect?

A) float('inf') B) float('nan') C) float('56'+'78') D) float('12+34')

Discuss

Answer & Solution

Answer: Option D

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