Verbal Reasoning - Mental Ability Questions

In the following question, select the missing number from the given series.

1728, 864, 432, 216, ?

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

XYZ : CBA : : QRS : ?

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

3 : 27 : : 4 : ?

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

LK : OP : : ? : UV

In the following question, select the related letter/letters from the given alternatives.

PGY : JAS : : VIK : ?

In the following question, select the related word pair from the given alternatives.

Bulb : Electricity : : ? : ?

Select the related word from the given alternatives.

JUMBUCKS : SKCUBMUJ :: SHIPJACK : ___

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

FINGERS : HAND :: ? : FEET