Mathematical an...

If DIAMOND is coded as VQYMKLV, then WEALTH is coded as 

Choose or find odd number pair
$$(18-45), (16-40), (14-28), (8-20)$$

$$E$$ is the son of $$A$$.
$$D$$ is the son of $$B$$.
$$E$$ is married to $$C$$.
$$C$$ is $$B$$'s daughter.
How is $$D$$ related to $$E$$ ?

Find the odd one out:

In each of the following questions find out the alternative which will replace the question mark.
? : QEHMDF :: WIDELY : HVCDXK

Which group of letters is different from others ?

In a village of Bastar district in Madhya Pradesh, only two types of people live who belong to a tribal class. The first type is known as class A, while the other is known as class B. In that village, there is no other type of person except these two. The activities of both types of people are governed by prefectly patterned norms of social behaviour. Each person of the tribe has to obey the norms. They are rigid about this.
As far as marriage is concerned, the following norms are to be followed
(A). The people of class A cannot marry any other member of their own class, though they can marry members of class B.
(B). After being married, each male member ceases to be a member of that class in which he was born but automatically, he becomes the member of the other class to which his wife belongs.
(C). As far as females are concerned, they remain the members of their own class after being married.
(D). On his birth, the child automatically becomes the member of his mother's class.
(E). When any male member becomes widower or divorcee, then he again belongs to the group in which he was born.
(F). Nobody can marry more than one person according to social laws.

Any class B female can have
   (P).  Grandfather born in class A
   (Q). Grandmother born in class A

Vasant says, " I have as many sisters as brothers." 

Acording to a military code, SYSTEM is SYSMET and NEARER is AENRER. What is the code for FRACTION?

If MADRAS can be written as NBESBT, how can BOMBAY be written in that code?