Explanation

Buckingham Palace is the official residence of the Queen of England in London, United Kingdom.

It serves as the administrative headquarters of the British monarchy.

Explanation

'Nineteen Eighty Four', also published as '1984'

It is a novel by English author George Orwell published in 1949 as a warning against totalitarianism.

Explanation

On December 11, 2019, Greta Thunberg was named Time magazine's Person of the Year. 

The 16-year-old climate activist from Sweden is the magazine's youngest choice to be named Person of the Year.

Explanation

Jamia Al-Azhar is located in Cairo, Egypt.

The Mosque of al-Azhar was founded by Jawhar al-Siqilly, the Fatimid conqueror of Egypt, in 970 as the congregational mosque for the new city of al-Qahira.

The first khutba was delivered from its minbar in 972.

A university was established there in 988.

Explanation

The National Highway Authority (NHA) manages 39 national highways, motorways, and expressways.

It totaling 12,131 kilometers in length.

Explanation

• About Warsaw Treaty Organization 
• Type: defense treaty
• Signatories: Soviet Union and seven other
• Signed: May 1955
• Headquartered: Moscow, Russia

Explanation

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Let the number be x

1/4 of the number = 1/4(x) =x/4

1/3 of the number = 1/3(x) =x/3

1/4 of a number subtracted from 1/3 of the number gives 12.

x/3-x/4 =12

x/3×4/4 - x/4×3/3 =12

4x/12 - 3x/12 =12

(4x-3x)/12=12

4x-3x=12×12

Explanation

• Rashid Minhas received the Nishan-e-Haider in 1971.
• He received this honor posthumously for his actions in preventing a traitor from stealing a fighter plane on August 20, 1971.

Explanation

Lest always takes should. 

Because “should” is used to indicate what is probable, here failure on not working hard. 

Explanation

The transfer of thermal energy from one substance to another that requires no physical medium is called radiation.

Radiation is the process by which thermal energy (heat) is transferred through electromagnetic waves, such as infrared radiation. 

They can occur in a vacuum, such as in the transfer of heat from the Sun to the Earth.

Unlike conduction and convection, which require a physical medium (solids, liquids, or gases),