The approximate distance between the sun and the earth

Three of the following four word pairs are alike and thus form a group. Select the word pair that does NOT belong to that group.

Statement: Coal will remain in the largest single sources of power generation.

Select the correct statement from the given statements

Introducing a man, a woman said, “He is the brother of the daughter of my father.” How is the man related to the woman?

In a certain code language,

'see their dresses' is coded as 'ti ve su',

'dresses we see' is coded as 'nx ti ve',

In a certain code language, 'GATE' is written as 'JOFB' and 'IDLE' is written as 'JGID'. How will 'MILK' be written in that language?

According to the logic used in the first pair, replace the question mark with the appropriate option.

Author : Pen :: Barber: ??