Analogy Questions

In the following question, select the related word from the given alternatives.
Pressure : Barometer : : ? : Odometer

Choose the related word/letters/number from the given alternatives. RARE : ERAR : : ROCKET : ?

Select the related word/letters/number from the given alternatives. 456 : 15 :: 789 : ?

Select the related word/letters/number from the given alternatives. E : V : : D : ?

In the following question, select the related number from the given alternatives.
3 : 27 : : 4 : ?

Select the related number from the given alternatives.
12.5 : 6.25 :: 7 : ?

In the following question, select the related word from the given alternatives.
Goiter : Iodine : : Anemia : ?

Select the related word/letters/number from the given alternatives.
30 : 16 :: 24 : ?