Blood Relations Questions

Only son of woman's grandfather - woman's father;  Man's brother's father - Man's father 

So, man's father is woman's father i.e woman is the man's sister.

Daughter of grandmother — Aunt: Aunt's only brother — Father. 

 Clearly, the only daughter or Monika's father is Monika herself 

So, Rahul's mother is Monika 

Thus, Monika's husband is the father of Rahul. 

Asha's mother's mother is man's mother i.e.. A.sha's mother is man's sister or Asita is man's niece. 

Father's father ---->Grandfather;  Grandfather's granddaughter -----> Sister; Sister's husband ---->Brother-in-law. So, Y is X's Brother-in-law.

K is the father-in-law of H means H is the wife of the brother (say, J) of the daughter (say, L) of K and K is a male (brother or father of some person, say P) i.e H @ J $ L # K $ P or H @ J $ L # K & P.

E is the daughter of A and F is the mother of E. So, A is the father of E and hence the husband of F. Now, 

D is the daughter of F. So, D and E are the daughters of A and F Also. A is the son of C. 

Now, only B remains. Thus, B and C are the parents of A. 

The sex of B and C cannot be determined: 

Q is the son of R but R is not the mother. So, R is the Father of Q. P is married to R 

So, P is the wife of R and the mother of Q, X is the daughter of P and hence of R and so she is the Sister of Q, Y is the brother of R and Z is the brother of P. 

Clearly, Q is the son of P and X is the daughter of P. So, P has two children.