Pointing towards a woman, Amit said, "She is the sister of my wife's husband." How is the woman related to Amit?

Statement:
School management has announced to take strict action against those students who do not report in class on time.
Assumptions:
 I. They want to maintain the dignity of school.
II. They want to develop discipline in students. 

CFL, EIK, GLJ, IOI, ? 

Direction : In the following question, select the related word form the given alternatives.
Coconut : Shell :: Letter : ?

Identify the shape that will complete the pattern

How many pairs of letters are there in the word ‘CAMARADERIE’ which have as many letters between them as they have between them in the English alphabet?

DIRECTIONS: Study the following arrangement carefully and answer the questions given below.
W 3 # R @ E J K T 4 B 9 I H D U 8 1 H % A V 5 δ 7 M P 2 Q $ 6

How many such vowels are there in the above arrangement, each of which is immediately preceded by a symbol and immediately followed by a consonant? 

Find the wrong number in the series.
2, 9,5, 36, 125, 648