Explanation

• The weight of a body on Earth is the gravitational force acting on it.
• Since the body already weighs 51 N on the surface of Earth, its weight on Earth remains 51 N.
• Formula: Weight = Mass × Gravity (W = mg).

Last verified on 24-06-2026

Explanation

• Microsoft Office is not an open source software.
• Because its source code is owned and controlled by Microsoft.
• Open source software allows users to view, modify, and distribute its source code.

Additional information:

Open source examples:

• Android
• Linux OS
• LibreOffice
• Mozilla Firefox
• Apache Web Server

Closed-source examples:

• Microsoft Windows
• Microsoft Office
• Adobe Photoshop

Last verified on 24-06-2026

Explanation

• Base (Radix): 2
• Digits used: 0, 1
• Used in: Computers, programming, digital circuits
• Each digit is called a bit (binary digit)
• Example: 1011₂

Last verified on 07-06-2026

Explanation

• Voter minimum age: 18 years
• Citizenship: Citizen of Pakistan required
• Electoral requirement: Name included in electoral roll
• Relevant law: Article 51/51A & Election laws of Pakistan

Additional information:

• MNA (National Assembly member): Minimum 25 years
• Senator: Minimum 30 years
• President of Pakistan: Minimum 45 years

Last verified on 24-06-2026

Explanation

• A break is a small part of a shift (work period).
• Similarly, a minute is a small part of an hour.
• So the relationship is part to whole analogy.

Last verified on 24-06-2026

Explanation

• Elon Musk is the owner/CEO of Tesla and SpaceX.
• Tesla (Electric cars, energy)
• SpaceX (Space exploration).

Additional information:

• X (Twitter)
• Neuralink (Brain-computer tech)
• The Boring Company (tunnels & transport)

Last verified on 24-06-2026

Explanation

• Name: Kiel Canal (Germany)
• Location: Germany
• Length: About 98 km
• Connects: North Sea ↔ Baltic Sea
• Traffic: ~25,000–30,000 ships per year

Last verified on 24-06-2026

Explanation

• With “has/have” (present perfect tense) we use the 3rd form of verb (past participle).
• So correct form is “has gone”.
• It shows an action completed in the past with relevance to the present.

Last verified on 24-06-2026

Explanation

3x² - 4√x + xy + √25x + 7x²  

1. Combine x²: 3x² + 7x² = 10x²  

2. √25x = √(25) × √x = 5√x  

3. Combine √x: -4√x + 5√x = +√x  

4. xy stays as is  

Result: 10x² + xy + √x

Last verified on 24-06-2026

Explanation

Let width = w

Height = w + 6

Perimeter of rectangle = 2(length + width)

= 2(w + (w + 6))

= 2(2w + 6)

= 4w + 12

Last verified on 24-06-2026