Select the sentence that has the correct use of words

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

BURIED : SNGCZX :: LEGAL : ?

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

Brave : Coward :: Honest : ?

If D = 12, AGE = 39, then ‘JADE’ will be equal to?

If 42 @ 21 = 18' and 35 @ 27 = 18', then 46 @ 32 = ?'. What will come in place of question mark?

8, 20, 48, 108, 232, 482

Select the option that is related to third letter cluster in the same way second letter cluster is related to first letter cluster.

Select the related number from the given alternatives.

42 : 12 :: 96 : ?