Verbal Reasoning - Mental Ability Questions

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
122, 197, 290, ?

In the following question, select the odd letter/letters 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.
DE, GI, KN, ?

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

CM, EK, GI, ?

Which one of the following words will appear third in the dictionary?

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

Corporate

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

CD, XW, GH, TS, KL, ?

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

EGL, DFK, CEJ, ?, ACH