Which letter-cluster will replace the question mark (?)

Statement:  Should robots replace astronauts in space missions?

Arguments:

If Z # L @ P & K @ J # X, then how is K related to Z?

Select the option that is related to the third word in the same way as the second word is related to the first word.

Airplane : Aviation Kerosene :: Car :

Which of the following numbers will replace the question mark (?) in the given series?

18, 27, 31, 43, 44, 59, 57, ?

Read the direction carefully and answer the following question.

In the following question, select the related letters from the given alternatives. 

BO : AM :: CP : ? 

Select the connect mirror image from the following options, when the mirror is placed on the right side of the given figure.

Arrange the given words in the sequence in which they occur in the dictionary.

1. Packer

2. Pained

3. Pacers

4. Pagnes

5. Paired

In a certain code language, ‘LIFE’ is coded as ‘9351’ and ‘NEAR’ is coded as ‘4692’.