Verbal Reasoning - Mental Ability Questions

In the following question, from the given alternative words, select the word which cannot be formed using the letters of the given word.
Representation

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

CDE, HIJ, MNO, ?

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

FNG, KSL, PXQ, UCV, ?

If CAR = 22 and BUS = 42, then TRAM = ?

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

RMT, PKR, NIP, ?, JEL

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

RLN, SNQ, TPT, URW, ?

If '+' means 'brother of', 'x' means 'mother of', '-' means 'father of' and '/' means 'son of', then which of the following means V is nephew of W?

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