Verbal Reasoning - Mental Ability Questions

In a certain code language "TEARS" is written as "UGDVX", then "SMILE" would be written as:

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

Start : End : : ? : ?

Select the related letters from the given alternatives.

FDH : LJN :: RPT : ?

Select the related number from the given alternatives.

111 : 89 :: 105 : ?

If A means '+', @ means 'x', & means '/' and V means '-', then the value of

7 @ 2 V 135 & 5 @ 3 & 9 A 1

Select the related word/letters/numbers from the given alternatives:

42:20::64:?

Select the related word/letters/numbers from the given alternatives:

Line : Square :: Arc : ?

Fill in the blank based on the given related pair.

GULF : 519104 :: WINE : ___