If P + Q means P is the husband of Q ;
P / Q menas P is the sister of Q  and
P x Q means P is the son of Q,
which of the following shows A is the daughter of B ?

D. A / D X B

A is the son of B. C, B`s sister has a son D and a daughter E. F is the maternal uncle of D.
How many nephews does F have ?

C. TWO

X introduces Y saying, "He is the husband of the grand daughter of the father of my father."
How is Y related to X ?

C. BROTHER-IN-LAW

A is the son of B.
C, B`s sister has a son D and a daughter E.
F is the maternal uncle of D.

How is E related to F ?

C. NIECE

Rahul told Anand, 'Yesterday I defeated the only brother of the daughter of my grandmother.'
Whom did Rahul defeat ?

B. FATHER