Explanation

• Indirect Speech: The doctor asked Sara if she had pain in her leg.
• Reporting verb: said to → asked because it is a question.
• Question type: It is a Yes/No question, so we use if.
• Pronoun change: you → she.
• Tense change: have → had.

Last updated 27-07-2026 by NA

Explanation

• He died a year ago.
• Tense used: Simple Past Tense.
• Reason: “A year ago” indicates a specific time in the past.
• Rule: Use Simple Past with words like yesterday, last week, and a year ago.

Last updated 27-07-2026 by NA

Explanation

The state of Kashmir has boundaries with:

• to the north and east by China (Xinjiang and Tibet),
• to the northwest by Afghanistan (Wakhan Corridor),
• to the west by Pakistan (Khyber Pakhtunkhwa and Punjab) 
• to the south by India (Himachal Pradesh and Punjab). 

Jammu and Kashmir is a region administered by India as a union territory.

It has been the subject of a dispute between India and Pakistan since 1947,

And between India and China since 1962.

Last updated 27-07-2026 by NA

Explanation

For the point $(a,-a)$:

$$x=a,y=-a$$

Therefore:

$$y=-x$$

$$Last\; updated\; 27-07-2026\; by\; NA$$

Explanation

Let the number of 20-cent coins = x
Then 50-cent coins = 54 − x

0.20x + 0.50(54 − x) = 20.70
x = 23

Last updated 27-07-2026 by NA

Explanation

22 km = 22,000 m

Circumference of wheel:

22000/500​=44 m

Using $C=\pi d$:

44=22​/7×d
$$d=14\text{m}$$

$$Last\; updated\; 27-07-2026\; by\; NA$$

Explanation

Given:

Write the terms as:

Using the formula:

For $n=10$:

Last updated 27-07-2026 by NA
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Explanation

Explanation

Given:

• $x+y=16$
• $x-y=3$

Using the identity:

x2−y2=(x+y)(x−y)
$$=16\times 3$$

=48

Last updated 27-07-2026 by NA
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Explanation

First 4 multiples of 5 = 5, 10, 15, 20
Sum = 5 + 10 + 15 + 20

= 50

Last updated 27-07-2026 by NA