Explanation

Laser technology is used in compact disc

Compact Disc is an example of Optical Storage

James T. Russell invented C.D. (Compact Disc).

 co-developed by Philips and Sony to store and play digital audio recordings.

history

 In August 1982, the first compact disc was manufactured.

It was then released in October 1982 in Japan and branded as Digital Audio Compact Disc.

It was released on March 2, 1983, in North America and Europe.

Explanation

Let Maryum's current age be x.

Ten years ago, Maryum's age was x - 10.

After one year, Maryum's age will be x + 1.

According to the problem, after one year, Maryum's age will be two times her age ten years ago:

x + 1 = 2(x - 10)

Now, simplify the equation:

x + 1 = 2x - 20

Add 20 to both sides:

x + 21 = 2x

Subtract x from both sides:

21 = x

So, Maryum's current age is 21.

Explanation

Explanation

Such means of type about to be mentioned.

That is used refer specific things mentioned earlier. 

Such means ایسا

That means جو

Explanation

The modem is short for "Modulator-Demodulator."

A modulator-demodulator or modem is a computer hardware device 

A modulator-demodulator or modem converts data from a digital format into a format .

Explanation

The pyramid of Giza is located in Egypt.

It is one of the 7 wonders of the ancient world.

These ancient structures are situated on the Giza Plateau, near Cairo.

The houses surrounding the pyramid were made of clay bricks dried in the sun.

All the houses had flat roofs.

Explanation

Let's denote the original two-digit number as 10a + b.

Since the product of the digits is 8:

ab = 8

Possible values for a and b are (1, 8) or (2, 4).

When 18 is added to the number, the digits are reversed:

10a + b + 18 = 10b + a

Simplify the equation:

9a - 9b = -18

a - b = -2

Now, check the possible values:

For (1, 8): 1 - 8 ≠ -2 (not valid)

For (2, 4): 2 - 4 = -2 (valid)

So, the original number is 10(2) + 4 = 24.

Explanation

Nuclear energy is too dangerous to be used widely. 

جوہری توانائی کا وسیع پیمانے پر استعمال کے لیے بہت خطرناک ہے۔

The word "too" is used as an adverb to modify the adjective "dangerous" in this sentence.

Explanation

Explanation

Let Latif's age be 7x and Saleem's age be 9x.

Since Latif is younger than Saleem by 7 years:

9x - 7x = 7

2x = 7

x = 7/2

x = 3.5

Now, Latif's age = 7x = 7(3.5) = 24.5