Explanation

"Antihealthy" is not a correct word.

The proper term is "unhealthy."

So the sentence should be "An unhealthy person often falls sick."

Explanation

When comparing two actions (you go vs. you reach), use comparative form: "faster" not "fastest".

"Fastest" is superlative and used when comparing more than two.

Explanation

a² - b² = (a - b)(a + b)

a⁴ - b⁴ = (a² - b²)(a² + b²)

= (a - b)(a + b)(a² + b²)

The LCM is (a - b)(a + b)(a² + b²) = (a² - b²)(a² + b²)

= a⁴ - b⁴

Explanation

Sodium carbonate (Na₂CO₃) is commonly known as soda ash.

It is used in glass making, detergents, and water softening.

Explanation

On the number line, Point X is clearly positioned at -4, which is four units left of 0.

Explanation

Given:

(x + 5) : (x + 7) = 5 : 7

We can write it as:

(x + 5) / (x + 7) = 5/7

Cross-multiplying:

7(x + 5) = 5(x + 7)

7x + 35 = 5x + 35

7x - 5x = 35 - 35

2x = 0

x = 0

Explanation

Cache memory is the fastest type of memory, located close to the CPU.

It stores frequently used data to maximize processing speed and performance.

Explanation

A systematic error occurs due to flaws in the measuring instrument or method, causing consistent deviation.

It can be corrected by calibration or proper maintenance of equipment.

Explanation

Core Reason for Trade:

Comparative Advantage: Countries specialize in producing what they are most efficient at and trade for other goods/services (e.g., Pakistan exports textiles, imports oil).

Diverse Needs: No country produces everything it requires (e.g., Japan imports food due to limited arable land).

Explanation

OIC's Purpose:

The Organization of Islamic Cooperation (OIC) is the second-largest intergovernmental organization after the UN, aimed at safeguarding the interests of Muslim-majority countries (e.g., Palestine, Kashmir, Islamophobia).

Pakistan's Role:

Advocacy: Pakistan actively raises issues like Kashmir and Islamophobia in OIC forums.

Mediation: Has mediated conflicts between Muslim nations (e.g., Iran-Saudi tensions).

Humanitarian Aid: Leads OIC initiatives for Rohingya Muslims, Afghan refugees, etc.