Explanation

The empty set is a set with no elements.

It is denoted by { } or Ø.

Explanation

Hovering means ایک جگہ پر معطل رہنا

Sunk means نیچے جانا یا نچلی سطح پر آباد ہونا

Explanation

The crescent moon and star on Pakistan’s flag are white.

They are placed on a green background symbolizing progress and peace.

Additional Information:

White color represents – peace and honesty & symbolizing the role of religious minorities

Green color represents – hope, joy, and love, and in many cultures has a sacred significance as in Pakistan where the color green is associated with Islam.

The crescent in the Pakistani Flag represents progress

Explanation

Hospital means ہسپتال

Explanation

The given statement:

If a : b = c : d then a : c = b : d

This is known as the Alternendo theorem.

The Alternendo theorem states that if a/b = c/d, then a/c = b/d.

Explanation

OMR stands for Optical Mark Recognition.

It is a technology that uses light to identify marks made on a paper document, typically for data collection and processing. 

Explanation

Prototypes are early models of a product used to:

• Test functionality (e.g., Does the design work?).
• Gather user feedback (e.g., Is the interface intuitive?).
• Identify flaws before mass production.

Explanation

Explanation

The File Menu in most applications (e.g., Notepad, Word, Photoshop) contains options like Open, Save, and Save As to access saved files.

Example:

In Microsoft Word: File → Open → Select saved document.

Explanation

Selected means منتخب

Appointed means مقرر