Analogy Questions

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

12 : 39 :: 15 : ?

Select the related word/letters/number from the given alternatives.

2 : 10 : : 3 : ?

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

Medicine : Patient : : Education : ?

Select the related word/letters/number from the given alternatives.

MT : JW : : RP : ?

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

ZXVT : ACEG :: SQOM :?

Select the related word/letters/number from the given alternatives.

Sound : Medium : : Light : ?

Select the related letters from the given alternatives.

XVT : RPN :: LJH : ?

If PQRST : SPTRQ then HIJKL : ?