Verbal Reasoning - Mental Ability Questions

From the given words, select the word which cannot be formed using the letters of the given word.
MYSTIQUE

In the following question, which one set of letters when sequentially placed at the gaps in the given letter series shall complete it?
a _ bc _ a _ bcdabc _ da _ cd _

If 3 # 4 % 8 = 6 and 9 % 4 # 3 = 12, then 12 % 6 # 24 = ?

Select the related word/letters/number from the given alternatives.
66 : 36 : : 99 : ?

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

2, 3, 7, 16, ?

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. Select the correct alternative from the given ones that will complete the series.
C A E, F D H, I G K, ?

A girl introduces a man as the son of her grandfather and the brother of her maternal aunt. How is the man related to the girl?