Alphabet Test Questions

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

BILLIONAIRE

A series is given with one term missing. Select the correct alternative from the given ones that will complete the series.
AY, CW, EU, ?

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

EFGHI, LMNO, RST, WX, ?

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

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

M_P_M_R_PM_PM_RR_P

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

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

PRQ, TVU, YAZ, ?

How many such pairs of letters are there in the word REGIONAL, each of which has as many letters between them in the word (in both forward and backward directions) as they have between them in the English alphabetical series ?