Verbal Reasoning - Mental Ability Questions

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
_k_m_kl_jk_m

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

HK, ? , PQ, TT, XW

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

KlMnO, qRsTu, WxYzA, cDeFg, ?

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

NI, PM, RQ, TU, VY, ?

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

From the given alternatives, select the word which CANNOT be formed using the letters of the given word.

Expenditure

From the given alternatives, select the word which CANNOT be formed using the letters of the given word.

Scrupulous

Find out the missing number on the basis of a certain trend.