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A. Tick (✔) the correct answers: 1. GUI stands for ✔ a. Graphical User Interface b. Graphical User Interaction c. Graphical User Interrogation 2. Which of the following is not an operating system? a. Linux b. Unix ✔ c. MS Word 3. This application provides access to the data stored in the hard disk. a. Network icon ✔ b. File Explorer c. Application icon 4. What is a folder within a folder called? a. Under folder b. Section folder ✔ c. Subfolder 5. Hard disk of a computer system is generally divided into partitions known as a. disks ✔ b. drives c. folders --- B. Fill in the blanks: 1. Windows is a Graphical User Interface based operating system. 2. Left pane displays the disk drives and folders, and is also known as the Navigation pane. 3. A folder is a collection of related files. 4. Start button is the most frequently used button on the desktop. 5. Once a file or folder is deleted from the Recycle Bin, it can never be restored. --- C. Write T for True and F for False: 1. File Explorer ...

1. Windows Media Player is used to play, organize, rip, and burn media files like music and videos. 2. Burning: Copying data from computer to CD/DVD. Ripping: Copying data from CD/DVD to computer. 3. Control Panel helps manage computer settings like hardware, software, date & time, and user accounts. 4. Installing: Adding a program to the computer. Uninstalling: Removing a program from the computer. 5. Troubleshooting means finding and fixing computer problems. Errors: Software crash, no internet, slow system, error messages.

  Let’s solve both problems step by step. 1. Find an angle which is two-thirds of its complement. Let the angle be x . Its complement is (90 - x) (since complementary angles add up to 90°). According to the question: x = (2/3)(90 - x) Now solve for x : x = (2/3)(90 - x) Multiply both sides by 3 to eliminate the fraction: 3x = 2(90 - x) 3x = 180 - 2x Add 2x to both sides: 5x = 180 x = 36 Answer: The angle is 36° . 2. Find an angle which is one-fifth of its supplement. Let the angle be y . Its supplement is (180 - y) (since supplementary angles add up to 180°). According to the question: y = (1/5)(180 - y) Now solve for y : y = (1/5)(180 - y) Multiply both sides by 5: 5y = 180 - y Add y to both sides: 6y = 180 y = 30 Answer: The angle is 30° .