Analogy Questions

In the following question, select the related word from the given alternatives.
Calendar : Date : : Index : ?

In the following question, select the related number from the given alternatives.
243 : 819 : : 163 : ?

Choose the related word/letters/number from the given alternatives. 19 : 6859 : : 21 : ?

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

Select the related word/letters/number from the given alternatives.
Donkey : Brays :: Monkey : ?

Findout the odd word/letters/number/number pair from the given alternatives.

Select the related word/letters/number from the given alternatives.
EFGH: LNPR : : ABCD : ?

In the following question, select the related letters from the given alternatives.
AEDM : ZQRN : : FLMO : ?