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

"She" is a pronoun replacing a person’s name.

It acts as the subject of the sentence.

Explanation

Charitable means مہربان اور سخی

Giving means مہربان اور سخی ، خاص طور پر مدد یا رقم دینے میں

Explanation

Operate means کسی چیز کو چلانے یا کنٹرول کرنے کے لئے

Perform means کسی عمل یا کام کو انجام دینے کے لئے

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

Autosum is a feature in Excel that automatically adds numbers in selected cells.

It uses the SUM function.

It is commonly accessed via the Σ (sigma) icon on the toolbar.

Explanation

The Himalayas were formed by the collision of the Indian and Eurasian tectonic plates.

They are the highest and most prominent fold mountains in Asia, including Mount Everest.