Algorithms for Year 7 Computing: Learn the Basics of Problem-Solving

Question 1

Which of the following is NOT a type of algorithm?

Accepted Answer

Deterministic

Answer

Sequential

Answer

Recursive

Answer

Parallel

Question 2

Which of the following is an advantage of using algorithms?

Accepted Answer

They can be used to solve complex problems effectively

Answer

They are always guaranteed to be efficient

Answer

They do not require any user input

Answer

They are always easy to understand

Question 3

What is the main purpose of a flowchart in algorithm design?

Accepted Answer

To represent the logic of the algorithm visually

Answer

To test the correctness of the algorithm

Answer

To generate code for the algorithm automatically

Answer

To improve the readability of the algorithm

Question 4

Which of the following is an example of a recursive algorithm?

Accepted Answer

Calculating the factorial of a number

Answer

Searching for an element in a list

Answer

Sorting a list of numbers

Answer

Printing a message

Question 5

What is the role of pseudocode in algorithm design?

Accepted Answer

To provide a high-level overview of the algorithm in a human-readable format

Answer

To generate code for the algorithm automatically

Answer

To test the correctness of the algorithm

Answer

To improve the readability of the algorithm

Question 6

Which of these is not a characteristic of a sequential algorithm?

Accepted Answer

Loops back and repeats instructions

Answer

Executes one instruction after another in a set order

Answer

Can be used to solve complex problems

Answer

Can be easily understood and implemented

Question 7

Which of these algorithms processes data one item at a time in a specific order?

Accepted Answer

Sequential

Answer

Iterative

Answer

Parallel

Answer

Randomized

Question 8

What is pseudocode?

Accepted Answer

A way of representing algorithms in a human-readable format

Answer

A formal programming language

Answer

A high-level programming language

Answer

A type of flowchart

Question 9

Which of these algorithms solves a problem by breaking it down into smaller subproblems?

Accepted Answer

Recursive

Answer

Iterative

Answer

Dynamic programming

Answer

Greedy

Question 10

What is the role of a base case in a recursive algorithm?

Accepted Answer

To end the recursion

Answer

To initialize the recursion

Answer

To check for errors

Answer

To store the result

Question 11

Which of the following accurately describes the types of algorithms?

Accepted Answer

Sequential and Iterative

Answer

Sequential and Decision

Answer

Decision and Iterative

Answer

Iterative and Recursive

Question 12

What is the primary purpose of a flowchart?

Accepted Answer

Visually representing an algorithm

Answer

Writing code for the algorithm

Answer

Testing the effectiveness of the algorithm

Answer

Correcting errors within the algorithm

Question 13

Which type of decision structure is commonly used in algorithms?

Accepted Answer

If-else statement

Answer

For loop

Answer

While loop

Answer

Switch case statement

Question 14

Explain the key difference between sequential and iterative algorithms.

Accepted Answer

Sequential algorithms execute instructions in a fixed order, while iterative algorithms repeat instructions as needed.

Answer

Iterative algorithms execute instructions in a fixed order, while sequential algorithms repeat instructions as needed.

Answer

Sequential algorithms are more efficient than iterative algorithms.

Answer

Iterative algorithms require user input, while sequential algorithms do not.

Question 15

What is the first step in designing an algorithm?

Accepted Answer

Identify the problem to be solved

Answer

Write the code

Answer

Test the algorithm

Answer

Draw a flowchart

Question 16

What is a primary purpose of an algorithm?

Accepted Answer

To provide clear instructions on how to solve a problem

Answer

To store data

Answer

To display information

Answer

To connect to the internet

Question 17

What is a key difference between a procedure and a function?

Accepted Answer

Procedures do not return a value, while functions do

Answer

Functions do not return a value, while procedures do

Answer

They are the same thing

Answer

Procedures are more complex than functions

Question 18

How do algorithms and programs differ?

Accepted Answer

An algorithm is a step-by-step process, while a program is a specific implementation of that process

Answer

A program is a step-by-step process, while an algorithm is a specific implementation of that process

Answer

They are the same thing

Answer

An algorithm is more complex than a program

Question 19

What is the main purpose of debugging in algorithm development?

Accepted Answer

To identify and correct errors in the algorithm

Answer

To make the algorithm run faster

Answer

To make the algorithm easier to understand

Answer

To document the algorithm

Question 20

Which of the following is not a type of algorithm?

Accepted Answer

Probabilistic

Answer

Sequential

Answer

Recursive

Answer

Parallel

Question 21

What is the first step in designing an efficient algorithm?

Accepted Answer

Identify the problem and define its requirements

Answer

Write code

Answer

Test the algorithm

Answer

Implement the algorithm

Question 22

What is the purpose of a flowchart?

Accepted Answer

To represent an algorithm visually and make it easier to understand

Answer

To write code for an algorithm

Answer

To test an algorithm

Answer

To store data for an algorithm

Question 23

What is the difference between a loop and a branch in an algorithm?

Accepted Answer

A loop repeats a set of instructions multiple times, while a branch chooses between different paths.

Answer

A branch repeats a set of instructions multiple times, while a loop chooses between different paths.

Answer

Loops and branches are the same thing.

Answer

Neither loops nor branches are used in algorithms.

Question 24

What is the purpose of using a library in algorithm design?

Accepted Answer

To reuse existing code and avoid reinventing the wheel

Answer

To improve the efficiency of the algorithm

Answer

To make the algorithm easier to understand

Answer

To debug the algorithm

Question 25

What is the difference between a deterministic and a non-deterministic algorithm?

Accepted Answer

A deterministic algorithm always produces the same output for the same input, while a non-deterministic algorithm may not.

Answer

A non-deterministic algorithm always produces the same output for the same input, while a deterministic algorithm may not.

Answer

Deterministic and non-deterministic algorithms are the same thing.

Answer

Neither deterministic nor non-deterministic algorithms are used in computing.

Question 26

What's the first step in designing an algorithm?

Accepted Answer

Identifying the problem it aims to solve

Answer

Writing the code to implement the algorithm

Answer

Creating a detailed flowchart for the algorithm

Answer

Running tests to check if the algorithm works

Question 27

Which algorithm type repeatedly executes a set of instructions until a condition is met?

Accepted Answer

Iterative

Answer

Sequential

Answer

Recursive

Answer

Parallel

Question 28

What's the primary purpose of a flowchart?

Accepted Answer

To visually represent an algorithm's steps

Answer

To store and manage data used by an algorithm

Answer

To translate an algorithm into code that a computer can understand

Answer

To test and debug an algorithm for errors

Question 29

Which option is NOT an advantage of using algorithms?

Accepted Answer

Wasting time and resources

Answer

Solving problems efficiently

Answer

Automating repetitive tasks

Answer

Improving the accuracy of calculations

Question 30

What's the role of pseudocode in algorithm design?

Accepted Answer

To provide a simplified, human-readable representation of an algorithm

Answer

To execute the algorithm directly on a computer

Answer

To store data that the algorithm will use

Answer

To test the algorithm for errors

Question 31

Which of the following is not a type of algorithm?

Accepted Answer

Ternary

Answer

Sequential

Answer

Recursive

Answer

Parallel

Question 32

What is the purpose of a step-by-step procedure in an algorithm?

Accepted Answer

To provide clear instructions to follow

Answer

To prevent errors

Answer

To make the algorithm more efficient

Answer

To ensure the algorithm is error-free

Question 33

Which of the following is a key skill for designing algorithms?

Accepted Answer

Problem-solving

Answer

Coding

Answer

Testing

Answer

Data analysis

Question 34

What is the main difference between a sequential algorithm and a parallel algorithm?

Accepted Answer

Sequential algorithms run one step at a time, while parallel algorithms can run multiple steps simultaneously

Answer

Sequential algorithms are more efficient than parallel algorithms

Answer

Parallel algorithms are only used for large datasets

Answer

Sequential algorithms are always deterministic

Question 35

Which of the following is a common problem-solving strategy for designing algorithms?

Accepted Answer

Divide-and-conquer

Answer

Brute force

Answer

Guess and check

Answer

Randomization

Question 36

What is the difference between an input and an output in an algorithm?

Accepted Answer

Inputs are the data processed by the algorithm, while outputs are the results

Answer

Inputs are the instructions for the algorithm, while outputs are the data

Answer

Inputs are always numerical, while outputs can be any type of data

Answer

Algorithms do not have inputs or outputs

Question 37

Which of the following is NOT an advantage of using algorithms?

Accepted Answer

They are always efficient and optimal

Answer

They provide a clear solution to a problem

Answer

They can be automated to save time

Answer

They can be used to solve complex problems

Question 38

What is the relationship between an algorithm and a program?

Accepted Answer

An algorithm is a general plan, while a program is a specific implementation of the algorithm

Answer

An algorithm is a mathematical concept, while a program is a software application

Answer

Algorithms are used for simple tasks, while programs are used for complex tasks

Answer

There is no difference between an algorithm and a program

Question 39

What is the purpose of testing an algorithm?

Accepted Answer

To make sure it works correctly

Answer

To improve its efficiency

Answer

To document the algorithm

Answer

To translate the algorithm into a program

Question 40

Which of the following is NOT a common type of algorithm?

Accepted Answer

Circular

Answer

Linear

Answer

Recursive

Answer

Branching

Question 41

What is the main purpose of using pseudocode when developing an algorithm?

Accepted Answer

To describe an algorithm without using formal programming language

Answer

To test an algorithm before coding

Answer

To run an algorithm on a computer

Answer

To store data for an algorithm

Question 42

What is the first crucial step in the process of designing an algorithm?

Accepted Answer

Thoroughly understanding the problem

Answer

Writing the code

Answer

Testing the algorithm

Answer

Choosing the programming language

Question 43

Which of the following algorithms is commonly used for searching in a list or array?

Accepted Answer

Binary Search

Answer

Bubble Sort

Answer

Insertion Sort

Answer

Merge Sort

Question 44

What is the key difference between an algorithm and a flowchart?

Accepted Answer

An algorithm is a detailed step-by-step guide, while a flowchart is a graphical representation.

Answer

A flowchart is more precise than an algorithm.

Answer

An algorithm is used only for coding, while a flowchart can be used for both coding and non-coding tasks.

Answer

There is no difference between an algorithm and a flowchart.

Question 45

What is the primary purpose of using a loop in an algorithm?

Accepted Answer

To repeat a set of instructions multiple times

Answer

To store data

Answer

To make decisions

Answer

To connect different parts of an algorithm

Question 46

Which of the following is NOT a common error that can occur in algorithm design?

Accepted Answer

Correctly designed algorithms

Answer

Infinite loops

Answer

Logical errors

Answer

Syntax errors

Question 47

What is the definition of an algorithm?

Accepted Answer

A step-by-step set of instructions to solve a problem

Answer

A type of computer code

Answer

A formula for calculating a value

Answer

A method for storing large amounts of data

Question 48

Which of the following is NOT a characteristic of an algorithm?

Accepted Answer

It should be easy to remember and follow

Answer

It must be precise and unambiguous

Answer

It must be efficient in terms of time and space complexity

Answer

It must always produce the same output for the same input

Question 49

What is the purpose of using a flowchart to represent an algorithm?

Accepted Answer

To visualize the steps of the algorithm in a clear and structured manner

Answer

To store data in a structured way

Answer

To perform calculations

Answer

To control the flow of a program

Question 50

What is the main benefit of using pseudocode?

Accepted Answer

It is easier to read and understand than code

Answer

It can be used to develop algorithms for any programming language

Answer

It is more precise than code

Answer

It is easier to debug than code

Question 51

What is the difference between a variable and a constant?

Accepted Answer

A variable can change its value, while a constant cannot

Answer

A constant can change its value, while a variable cannot

Answer

Variables and constants have the same properties

Answer

Variables are used to store data, while constants are used to perform calculations

Question 52

Why is it important to use loops in an algorithm?

Accepted Answer

To repeat a set of instructions multiple times

Answer

To store data in a structured way

Answer

To perform calculations

Answer

To control the flow of a program

Question 53

Which of the following statements about conditional statements is true?

Accepted Answer

Conditional statements allow an algorithm to make decisions based on certain conditions

Answer

Conditional statements are always true

Answer

Conditional statements are used to repeat a set of instructions

Answer

Conditional statements are used to store data

Question 54

What is the essential difference between an algorithm and a program?

Accepted Answer

An algorithm is a general set of instructions, while a program is a specific implementation in a particular programming language

Answer

A program is a general set of instructions, while an algorithm is a specific implementation in a particular programming language

Answer

Algorithms and programs are the same thing

Answer

Algorithms are used to design programs, while programs are used to execute algorithms

Question 55

Which of the following is a common technique used in algorithm design?

Accepted Answer

Decomposition

Answer

Pattern recognition

Answer

Trial and error

Answer

Guesswork

Question 56

What is the main purpose of an algorithm?

Accepted Answer

To solve a problem

Answer

To store data

Answer

To perform calculations

Answer

To control the flow of a program

Question 57

What is the term for a sequence of steps that a computer follows to solve a problem?

Accepted Answer

Algorithm

Answer

Procedure

Answer

Program

Answer

Function

Question 58

Which type of algorithm involves repeating a set of steps until a condition is met?

Accepted Answer

Iterative

Answer

Sequential

Answer

Recursive

Answer

Parallel

Question 59

What is the primary purpose of using a flowchart when designing an algorithm?

Accepted Answer

To represent the steps and flow of the algorithm visually

Answer

To write the algorithm in a programming language

Answer

To store data for the algorithm

Answer

To test the efficiency of the algorithm

Question 60

What is the key difference between sequential and iterative algorithms?

Accepted Answer

Iterative algorithms involve loops, while sequential algorithms do not.

Answer

Sequential algorithms involve loops, while iterative algorithms do not.

Answer

Sequential algorithms only perform a single task, while iterative algorithms can perform multiple tasks.

Answer

Iterative algorithms only perform a single task, while sequential algorithms can perform multiple tasks.

Question 61

What is the role of variables in algorithm design?

Accepted Answer

To store and manipulate data

Answer

To control the flow of the algorithm

Answer

To perform calculations

Answer

To display results

Question 62

Which of the following factors is not typically considered when designing an algorithm?

Accepted Answer

User experience and ease of use

Answer

Accuracy and correctness

Answer

Efficiency and performance

Answer

Cost and resource consumption