Questions

All the data in a computer system consists of binary information. 'Binary' means there are only 2 possible values: 0 and 1.

Computer software translates the information you actually give on it such as decimal numbers, text, photos, sound, and video to the binary information.

China recently unveiled the world's first underground hotel.

Let the missing numbers be x, y, a and b

x + y = 8 ---- (1)
a - b = 6 ---- (2)
x + a = 13 --- (3)
y + b = 8 ---- (4)

2x + a + y = 21 --- From (1 & 3)
a + y = 14 ----  From (2 & 4)

Substitute (2 & 4) in (1 & 3)

2x + 14 = 21
2x = 7
x = 3.5

From (1) ---> 3.5 + y = 8
=> y = 8 - 3.5 = 4.5

a + y = 14 => a = 14 - y = 14 - 4.5 => a = 9.5
From (4) ---- y + b = 8 => b = 8 - y = 8 - 4.5 = 3.5

Hence,
x = 3.5
y = 4.5
a = 9.5
b = 3.5

After the deaths of  Cromwell monarchy was restored and Charles II was made king of England. He and his successor, James II tried to assert the superiority of the monarchy. But feelings against this kind of rule had grown too strong. In 1688, a group of politicians invited William of Orange, the husband of James II's daughter, Mary, and rulers of Holland, to become king. Without firing a shot, William reached London and James II fled to France. The throne was granted to William and Mary Jointly. This event is known as the 'Glorious Revolution' . This revolution marked the triumph of parliament over the monarchy.