Direction: In each of the following questions, four words have been given, out of which three are alike in some manner and the fourth one is different. Choose out the odd one.

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

Which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
aba _ baca _ ba _ bacaabac _ aca

In each of the following questions, select the related letter/word/ number from the given alternatives.
8 : 584 :: 4  : ?

If AIR is called GREEN, GREEN is called BLUE, BLUE is called SKY, SKY is called YELLOW, YELLOW is called WATER and WATER is called PINK then what is the colour of clear SKY?

XYZ, ABC, UVW, DEF, RST, GHI,_ ? 

If A is the mother of B. C is the son A, D is the brother of E, E is the daughter of B. Who is the grandmother other of D?

Select the odd word from the given alternatives.