Explanation

Smallpox induces long-term immunity after infection or vaccination.

It providing lifelong protection against future infections.

Explanation

Imitation: Individuality :: Jam : Traffic

Explanation

The Provincial Assembly of Punjab will have a total of 371 seats:

297 general seats,

66 reserved for women,

8 reserved for non-Muslims.

General Seats in National Assembly

Punjab: 141

Sindh: 61

Khyber Pakhtunkhwa: 45

Balochistan: 16

Islamabad: 3

Total general seats in NA: 266

Explanation

To find the number of shelves needed, divide the total number of books (24375) by the number of books that can be arranged in each shelf (375):

24375 ÷ 375 = 65

So, 65 shelves will be needed.

Explanation

The correct sentence is: She was preparing for the presentation.

This sentence is in the past continuous tense.

It indicating that the action of preparing was ongoing at a specific point in the past.

Explanation

The series is divided by 2 to get the next term, so:

240 ÷ 2 = 120

120 ÷ 2 = 40

40 ÷ 2 = 10

10 ÷ 2 = 2

And preceding the 240, we have:

440 ÷ 2 = 220

So, the correct sequence is: 220, 240, 120, 40, 10, 2.

Explanation

Doha is the capital and largest city of Qatar.

It has a significant seaport, the Port of Doha.

It serves as a major cargo and passenger hub for the country.

The port is strategically located on the Persian Gulf.

It facilitating trade and commerce between Qatar and other countries in the region and beyond.

Explanation

The idiomatic expression "to keep one's head" means to remain calm and composed, especially in a difficult or emergency situation.

It is often used to encourage someone to stay calm and think clearly, rather than panicking or losing control.

Explanation

The sentence should read: "The contractor insisted that he will complete the work before the end of March."

This indicates the contractor's commitment to finishing the work by the specified deadline.

Explanation

Let's calculate the number of skilled employees (x) and unskilled employees (y):

Total salary of skilled employees = 520x

Total salary of unskilled employees = 420y

Total salary of all employees = 500(x + y)

Since the average salary is Rs. 500, we can set up the equation:

520x + 420y = 500(x + y)

Solving for x and y, we get:

x = 0.6(x + y)

So, the percentage of skilled employees is:

(0.6(x + y) / (x + y)) × 100 = 60%

Therefore, 60% of the employees in the firm are skilled.