All the compounds of which of the following sets belong

If the square root of the product of two numbers equals their average, then

A has an amount which is 120% of what B has. What percent of the money should. A give to B so that they have equal amounts?

Ice is slippery because it:

A rectangular paper of width 8cm and length 22cm rolled along it width and a cylinder is formed.

40% of an amount is Rs 55. 160% of the same amount will be 

Consider the following statements :

1.      180⁰ E and 180⁰ W meridians are on the same line.

Consider the following statements :

Consider the following statements :

1.      The local time changes by four minutes for every one degree of longitude.

Which is the article that deals with the official language?

The missing term of the series is 

A2, C5, E8, G11, ____________