Explanation

Mr. Ali asked his son Rani whether he had finished his lesson.

The sentence is a yes/no question, so "asked... whether" is correct.

"Have you finished" changes to "he had finished" in indirect speech.

Explanation

The Governor is appointed by the President of Pakistan.

Term of five years.

History of State Bank

• Zahid Husain was the founder and the first governor of the State Bank of Pakistan from June 1948 to July 1953.
• Dr. Shamshad Akhtar became the first female Governor of the State Bank of Pakistan in 2006.

Must read 

Who is the current Governor of the State Bank of Pakistan (SBP)?

Explanation

"Occur" is the appropriate verb to describe plots unfolding in episodes.

"Repeatedly" indicates that these plots happen often (e.g., recurring storylines).

Explanation

The sentence contains an independent clause ("he met his friend") and a dependent clause ("On reaching the destination").

It is a complex sentence because it has both independent and dependent clauses connected by a subordinating conjunction.

Explanation

No. of digits in 1-digit page nos. = 1x9 = 9.

No. of digits in 2-digit page nos. = 2 x 90 = 180.

No. of digits in 3-digit page nos. = 3 x 900 = 2700.

No. of digits in 4-digit page nos. = 3189 - (9 + 180 + 2700) = 3189 - 2889 = 300.

Therefore No. of pages with 4-digit page nos. = (300/4) = 75.

Hence, total number of pages = (999 + 75) = 1074.

Explanation

Let's calculate the total pump-hours required to empty the tank:

3 pumps * 8 hours/day * 2 days = 48 pump-hours

If 4 pumps need to empty the tank in 1 day:

Let x be the number of hours they need to work:

4 pumps * x hours/day * 1 day = 48 pump-hours

4x = 48

x = 12

Explanation

Probability = 5C2/7C2 = 10/21

Total number of balls = 2 + 3 + 2 = 7

∴ Number of ways of drawing 2 balls out of 7 = 7C2 = (7 × 6) / (2 × 1) = 42/2 = 21

Number of balls other than blue = 5

∴ Number of ways of drawing 2 balls out of 5 = 5C2 = (5 × 4) / (2 × 1) = 20/2 = 10

∴ Required Probability = 10/21

Explanation

Lord Dalhousie followed the Doctrine of Lapse and direct annexation to expand British rule.

He annexed Punjab (1849), Behar (part of Bengal Presidency), and Oudh (1856) during his tenure.

Explanation

"When they opened the suitcase, many of the items were found missing."

• "Items" is a countable plural noun, so we use "many" with it.

• "Much" is used with uncountable nouns.

• "Most" would change the meaning (implying almost all were missing), while "many" simply means a large number.

Explanation

To find the percentage of profit, use the formula:

$$text{Profit$$Cost PriceSelling )×100

Given:
Cost Price (CP) = Rs. 500
Selling Price (SP) = Rs. 800

$$text{Profit} = 800 - 500 = 300$$ $$text{Profit$$500​)×100=60%