Data structures, operators and variables

What is a variable in programming?

• A constant value

• A container for storing data

• A reserved keyword

• An operator

Which of the following is an example of a constant in Python?

• pi = 3.14159

• x = 5

• my_string = "Hello, World!"

• None of the above

What is the purpose of a data structure in programming?

• To define constants

• To store and organise data efficiently

• To perform mathematical calculations

• To write comments in code

In Python, which data structure is used to store an ordered collection of individual items?

• List

• Set

• Dictionary

• Tuple

Which data structure is used for storing key-value pairs in Python?

• List

• Set

• Dictionary

• Tuple

What is an array in data structure theory?

• A data structure that stores multiple items of the same type

• A data structure that stores multiple items of different data types

• A data structure that only stores numeric data types

• A data structure only used in Python

In Python, which operator is used for exponentiation?

• +

• -

• • *

• **

What is the result of the expression ' 7 // 2 ' in Python?

• 3.5

• 3

• 3.0

• 4

What does the '%' operator do in Python?

• Returns the remainder of a division

• Performs a bitwise AND operation

• Raises a number to a power

• Compares to values for equality

Which operator is used for checking if two values are equal in Python?

• ==

• =

• !=

• is