Blood Relations Questions

D is father of A and grandfather of F. So, A is father of F. 

Thus. D and A are the two fathers. C is the sister of F So. C is the daughter of A. 

Since there is only one mother, it is evident that E is the wife of A and hence the mother of C and F. 

So, B is brother of A There are three brothers. So. F is the brother of C. 

 Clearly, A is E's Husband.

T is the brother of S, who is the daughter of R. So, T and S are the children of R. 

Now. Q is the brother of R. So, T and S are the cousins of Q. 

Girls's father's only son— Girl's brother. Daughter in law of girl’s grandmother can be their mother, or maternal uncle’s wife, i.e. aunt. So relation cannot be determined.

A is a male and married to B. So, A is the husband and B is the wife. C is the brother of A. D is the son of C. E, who is the sister of D will be the daughter of C. B is the daughter-in-law of F whose husband has died means F is the mother of A. 

A is a male. B. the wife, is female. C. the brother, is male. D. the son, is male. E, the sister, is female. F, the mother, is a female. So, there are three males. 

Brother of my wife — My brother.in-law; Son of lady's brother is the brother-in-law of the man. 

So lady's brother is man's father-in-law

i.e., the lady is the sister of man's father-in-law. 

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: 

My mother's mother — My grandmother: My grandmother's only son — My maternal uncle. So, the woman is man's niece. 

A is father of C and C is sister of D. So, A is father of D. 

But D is son of B. So, B is the mother of D and wife of K Also. E is the brother of A So, B is the sister-in-law of E.