Computer Science 9

Enlist the optional parameters to open a webpage.

When opening a webpage using JavaScript’s window.open() function, several optional parameters can be specified: 1. URL – Defines the web page to open. 2. Name – Specifies the name of the new window or tab. 3. Features – Defines window properties such as: width and height for window dimensions top and left for positioning resizable=yes/no … Read more

What is ‘href’ and how is it used

‘href’ stands for “Hypertext Reference” and is an attribute used in HTML anchor (<a>) tags to define the URL of a hyperlink. It is used to link different web pages or resources such as images, files, and other websites. The syntax is: <a href=”https://example.com”>Click Here</a>. When users click the link, they are directed to the … Read more

Contrast between website and web application.

A website is a collection of web pages that provide information and resources to users. It is primarily static and does not require user interaction beyond navigation. Websites are generally built using HTML, CSS, and sometimes JavaScript. On the other hand, a web application is an interactive program accessed through a browser, allowing users to … Read more

Write down the properties of computational thinking.

Computational thinking is an essential skill in the digital age, and it is fundamental to problem-solving in computer science and other disciplines. The key properties of computational thinking include: Decomposition:This involves breaking down a large, complex problem into smaller, more manageable sub-problems. Decomposition allows you to focus on individual parts of the problem, which makes … Read more

A child wants to plan a birthday party for their friend. Draw an IPO chart for this situation.

Input Process Output Party details (date, guest list, activities) 1. Create a guest list with names and contacts. A complete birthday party plan. 2. Choose party activities (games, music, decorations). 3. Set the date and time for the party. 4. Send out invitations. 5. Prepare party supplies (cake, decorations, etc.). Explanation: The input consists of … Read more

Create an IPO chart for a scenario where a user enters two numbers. The user selects an operation (addition, subtraction, multiplication, or division), and the output is displayed accordingly.

Input Process Output Two numbers (num1, num2) and the operation (add, subtract, multiply, divide) 1. Accept the two numbers and the operation. The result of the selected operation. 2. Perform the selected operation based on user input: – If addition, result=num1+num2 – If subtraction, result=num1−num2 – If multiplication, result=num1×num2 – If division, result=num1/num2, provided num2 … Read more

Create an IPO chart that accepts the ages of four boys and calculates their total and average age. The program should display both the total and the average age.

Input Process Output Ages of four boys 1. Accept the ages of the four boys as input (e.g., age1, age2, age3, age4). Total age of four boys. (e.g., age1, age2, age3, age4) 2. Calculate the total age by adding all the ages together: total=age1+age2+age3+age4 The average age of the boys. 3. Calculate the average age … Read more

A student has to take one course of physics, one of science, and one of mathematics. He may choose from 3 physics courses (P1, P2, P3), 2 science courses (S1, S2), and 2 mathematics courses (M1, M2). In how many ways can the student select the three courses?

The number of ways the student can select one course from each subject is determined by multiplying the number of options available for each subject. In this case: There are 3 choices for physics (P1, P2, P3). There are 2 choices for science (S1, S2). There are 2 choices for mathematics (M1, M2). To find … Read more

Identify whether the given problems are Decision Problems, Counting Problems, or Search Problems. Write your answer in front of each problem.

Does a given binary string have an even number of zeros? This is a Decision Problem because the question asks whether a specific condition (in this case, having an even number of zeros in a binary string) is true or false. Decision problems are problems where the solution is a simple “yes” or “no” answer. … Read more

There are 4 different roads from city A to city B and 2 different roads from city B to city C. Draw a map of the given situation and determine how many possible routes exist from city A to city C passing through city B.

To find the total number of routes from city A to city C passing through city B, we multiply the number of ways to go from city A to city B (4 roads) by the number of ways to go from city B to city C (2 roads).Thus, the total number of possible routes is:4×2=8 … Read more