Explanation

Steel is the most elastic material

Because it returns to its original shape more effectively after being deformed than the other materials listed.

Explanation

We are given:

x+y=10

xy=20

The sum of the reciprocals of the two numbers is: 1/x+1/y =x+y/xy

Substitute the given values:

=10/20

=1/2

Explanation

 Trojan Horse is malware that is installed on a computer without the user's knowledge and often runs malicious code.

Explanation

The correct punctuation is "History, it has been said, is the essence of innumerable biographies."

Commas are needed to set off the clause "it has been said."

Explanation

In most sports, the referee signs the final result after the game to confirm the official score or outcome.

Explanation

In passive voice, "She will have sung a song" becomes "A song will have been sung by her."

Passive voice changes the focus from the subject to the object.

Explanation

he correct phrase is "worse than I had expected" because it uses proper comparative structure.

Explanation

The demographic transition model was initially proposed in 1929 by demographer Warren Thompson.

Explanation

The antonym of "quell" is: incite بھڑکانا

Explanation

OIC headquarters is located in Jadda.

It is the largest international organization outside of the United Nations.

The official languages of the OIC are Arabic, English, and French.

It changed its name on 28 June 2011 from the Organization of the Islamic Conference to its current name.

Total Current member= 57

Jakarta is the largest city in the Organisation of Islamic Cooperation (OIC) member countries