Analogy Questions

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

Select the related number from the given alternatives.
3/7 : 7/3 :: 9/2 : ?

Select the related word/letters/number from the given alternatives.
GT : IV : : KX : ?

In the following question, select the related letters from the given alternatives.
JPC : GMZ : : PUV : ?

In the following question, select the related number from the given alternatives.
48 : 63 : : 80 : ?

In the following question, select the related number from the given alternatives. 850 : 863 : : 430 : ?

Select the related word/letters/numbers from the given alternatives:
3 : 243 :: 5 : ?

'E' is related to 'BH' in the same way as 'N' is related to?