Explanation

Do not make friends with selfish people.

This option correctly uses "friends" as the plural noun to indicate multiple acquaintances.

The phrase accurately conveys the message of avoiding relationships with selfish individuals.

Explanation

Not only the teacher but students were laughing.

نہ صرف استاد بلکہ طلباء بھی ہنس رہے تھے۔

"Were" is used to agree with the plural subject "students," following the rule of proximity in compound subjects.

Explanation

When two colors describe a single subject (the dog), "is" is used with "and," indicating one dog with both colors, not multiple dogs.

Explanation

√(x - 1)^2 + √(3 - x)^2

Since 1 < x < 2, we can simplify the expressions inside the square roots:

(x - 1)^2 = (x - 1)(x - 1) = x^2 - 2x + 1

(3 - x)^2 = (3 - x)(3 - x) = 9 - 6x + x^2

Now, add the two expressions:

x^2 - 2x + 1 + 9 - 6x + x^2

= 2x^2 - 8x + 10

Take the square root of the result:

√(2x^2 - 8x + 10)

Since 1 < x < 2, we can plug in x = 1 and x = 2 to find the maximum and minimum values:

At x = 1: √(2 - 8 + 10) = √4 = 2

At x = 2: √(8 - 16 + 10) = √2

So, the minimum value of the expression is 2, which occurs when x = 1.

Therefore, the correct answer is: 2

Explanation

In 2017, Gambia, an African member of the Organization of Islamic Cooperation (OIC), formally removed the word "Islamic" from its official name.

The country changed from "The Islamic Republic of The Gambia" to "The Republic of The Gambia."

Explanation

The Pakistani player who won the 1994 World Snooker Championship is Muhammad Yousaf.

He defeated Johannes R. Johanneson of Iceland 11-9 in Johannesburg to claim the championship.

In 1994 Pakistan was world champion of:

Explanation

Hub, Haleji, Keenjhar, and Manchhar lakes are located in Sindh province.

Hub Lake: Near Karachi, bordering Lasbela District, Balochistan.

Keenjhar Lake and Haleji Lake: Located in Thatta District.

Manchhar Lake: Situated in Jamshoro District.

Explanation

Find the area of the rectangular lawn:

Area = Length x Breadth = 80m x 60m = 4800 square meters

Since there are two roads, one parallel to the length and one parallel to the breadth, we need to find the area of each road:

Road parallel to length:

Area = Length x Width = 80m x 10m = 800 square meters

Road parallel to breadth:

Area = Breadth x Width = 60m x 10m = 600 square meters

However, the problem states that the roads are running in the middle of the lawn, which means they intersect. To avoid double-counting the intersection area, we need to subtract it:

Intersection Area = Width x Width = 10m x 10m = 100 square meters

Now, add the areas of both roads and subtract the intersection area:

Total Road Area = (800 + 600) - 100 = 1300 square meters

Finally, calculate the cost of gravelling the roads at Rs. 30 per square meter:

Cost = Total Road Area x Rate = 1300 x 30 = Rs. 39000

Explanation

"But" is a conjunction used to connect contrasting ideas or statements within a sentence.

It introduces an opposition or exception to what was previously mentioned.

Explanation

Khalid Mehmood Arif authored Working with Zia.

It is a book that offers insights into his experiences and observations while serving under General Zia-ul-Haq's regime in Pakistan.

It provides a close look at political and military events during Zia's rule.