Analogy Questions

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

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

Square is related to Line in the same way as Cube is related to

In the following question, select the related word from the given alternatives.
Mathematics : Formulas : : Chemistry : ?

In the following question, select the related letter pair from the given alternatives.PIR : OHQ : : ? : ?

Select the related word from the given alternatives.
Cotton : White :: Coal : ?

In the following question, select the related number from the given alternatives.
40 : 100 : : 56 : ?

In the following question, select the related word from the given alternatives.
Ampere : Electric current : : Fathom : ?