Verbal Reasoning - Mental Ability Questions

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 : ?

Select the Missing number?

What will come in place of the question mark (?) in the following number series?14, 18, 9, 25, 0, ?

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

A series is given, with one term missing. Choose the correct alternative from the given ones that will complete the series.

OXXXXX, XXXXO, OXXX, XXO, OX, ?

Prem starts to school from his house and walks 400 metres towards north, turns left and walks 100 metres, turns left and walks 200 metres, turns left and walks 100 metres. How far he is away from his house?

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