Verbal Reasoning - Mental Ability Questions

In the following question, four number pairs are given. The number on left side of (–) is related to the number of the right side of (–) with someLogic/Rule/Relation. Three are similar on basis of same Logic/Rule/Relation. Select the odd one out from the given alternatives

Find out the odd word/letters/number/number pair from the given alternatives.

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

NVX, LTV, JRT, ?, FNP

Select the missing number from the given responses.

Select the related word/letters/number from the given alternatives.
36 : 25 : : 100 : ?

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

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

6, 18, 54, ? , 486, 1458

In the following question, select the related letters from the given alternatives.
BPTW : CQUX : : CHNS : ?