U4-A4-Understanding Key Programming Principles

What is the main purpose of iteration in programming?

• To execute a block of code once

• To repeat a block of code multiple times

• To define a function

• To declare a variable

Which of the following is an example of a 'for loop' in Python?

• `while (i < 5): print(i)`

• `for i in range(5): print(i)`

• `if (i < 5): print(i)`

• `repeat print(i) until (i == 5)`

In mathematical logic, what does a truth table help to verify?

• The speed of an algorithm

• The syntax of a programming language

• The truth values of logical expressions

• The memory usage of a program

Which of the following statements is true about propositional dynamic logic?

• It is used to measure the speed of a computer

• It is used to demonstrate the function of algorithms

• It is used to design user interfaces

• It is used to compile code

Which of the following is a property of sets?

• Sets can contain duplicate elements

• Sets are ordered collections

• Sets are immutable

• Sets are unordered collections

What is the main difference between a 'for loop' and a 'while loop'?

• A 'for loop' is used for indefinite iteration, while a 'while loop' is used for definite iteration

• A 'for loop' is used for definite iteration, while a 'while loop' is used for indefinite iteration

• A 'for loop' can only iterate over numbers, while a 'while loop' can iterate over any data type

• A 'for loop' is faster than a 'while loop'

• The intersection of sets A and B

• The difference between sets A and B

• The union of sets A and B

• The symmetric difference of sets A and B

Which of the following is an example of using mathematical logic in programming?

• Using loops to iterate over a list

• Using conditional statements to make decisions

• Using functions to organise code

• Using variables to store data

How can sets be used to filter data in a programming context?

• By using loops to iterate over each element

• By using conditional statements to check each element

• By using set operations to find common or unique elements

• By using functions to transform each element