Explanation

In indirect speech, exclamation sentences are converted using "exclaimed" and a change of pronouns and verb tense.

The sentence "What a stupid fellow you are!" becomes "He exclaimed that what a stupid fellow I was."

Explanation

Kublai Khan was the Emperor of China.

He was the founder of the Yuan Dynasty (1271–1368).

He was the grandson of Genghis Khan.

He played a significant role in the Mongol expansion and the establishment of Mongol rule in China.

Explanation

PTC stands for Primary Teaching Certificate.

It is a qualification for teaching at the primary school level.

It is typically awarded after completing training to teach in primary schools.

Explanation

To find the average speed:

Total distance = 120 km * 2 (to and fro) = 240 km

Time taken to go = 120 km / 60 km/h = 2 hours

Time taken to return = 120 km / 40 km/h = 3 hours

Total time = 2 + 3 = 5 hours

Average speed = Total distance / Total time

= 240 km / 5 hours

= 48 km/h

Explanation

Given xy = 1 and x > 0:

y = 1/x

We want to minimize x + y = x + 1/x.

Let's find the minimum value:

Let f(x) = x + 1/x

f'(x) = 1 - 1/x² = 0 for minimum

x² = 1

x = 1 (since x > 0)

f(1) = 1 + 1/1 = 2

The minimum value of x + y is 2.

Explanation

Given that 3 women = 2 men in terms of work:

Work done by 15 men in 1 hour = 1 / (21 * 8)

Work done by 1 man in 1 hour = 1 / (15 * 21 * 8)

Work done by 1 woman in 1 hour = (2/3) * (1 / (15 * 21 * 8))

Work done by 21 women in 1 hour = 21 * (2/3) * (1 / (15 * 21 * 8))

= 14 / (15 * 21 * 8)

= 1 / (15 * 9 * 8) (simplified for 21 women working)

If 21 women work for 6 hours a day:

Work done by 21 women in 1 day = 6 * (1 / (15 * 9 * 8)) * (15 * 9)

= 6 / 8

To complete the work:

Number of days = 8 / 6 * 21

= 28

None of the given options directly match the calculation approach provided, but recalculating properly considering the work equivalence and hours:

15 men * 21 days * 8 hours = 2520 man-hours

Given 3 women = 2 men, 21 women = 14 men equivalent

Let x be the number of days for 21 women working 6 hours/day:

14 men * x days * 6 hours = 2520 man-hours

84x = 2520

x = 30

Explanation

Misspelled means غلط ہجے

Explanation

The correct sentence is: People call this place the Forbidden Forest.

"Call" is used when naming or referring to something by a specific title.

Explanation

The student will go camping during the vacation.

طالب علم چھٹی کے دوران کیمپنگ میں جائے گا۔

During is a preposition. 

It is used throughout the duration of (a period of time). 

By indication of "period of time throughout students vacation", we marked the option "during".

Explanation

A circuit is a closed path through which electrons (electric current) flow.

It typically includes components like resistors, batteries, and wires, allowing controlled movement of current.