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.
Nightwalker

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

GLP, HNR, IPT, JRV, ?

Find the missing number 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.

TAP, WDS, ZGV, ?, FMB

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

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

289, 256, 225, 196, ?

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

13, 24, 46, 79, ?

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

PIG, TMK, XQO, ?, FYW