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.
RECIPROCATE

Choose the correct alternative from the given ones that will complete the below series. W/S, U/O, S/K, Q/G

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
A, E, I, M, ?

A is to the west of C. B is to the north-east of A and is equidistant from A and C. In which direction is B with respect to C?

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

Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?

aa_ab_ _aaa _a

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

PMA, RPE, TSI, VVM, ?

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

12, 24, 72, 288, ?