The relations may be analyzed as follows :
Father's wife - Mother; Mother's Father - Grandfather; Grandfather's granddaughter - Sister; Sister's uncle - uncle.
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.
Clearly. B and C are the parents of the couple
C is the daughter-in-law of A who is the grandmother of' F means C is the mother of F But F is the son of B.
So. B is C's husband. But C, the lawyer. is married to the Doctor So. B is the Doctor. F, the Accountant, will be the non of B and C, E is the unmarried Engineer
So, the other mamed couple can be that of grandmother of Fie A and 0 But D. the Salesman, is married to the Lady Teacher.
So. D, the Salesman, is the grandfather of F, father of B and the husband of A, the Lady Teacher.
D is the grandfather of F.
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.
There are two females only ? mother P and daughter X
B is the son of C but C is not the mother of B means C is the father of B A is marned to C means A is the mother of B. F is brother of B means F is son of A and C. D is daughter of A means D is daughter of A and C
E is the brother of C who is the father of D. So. E is the uncle of D.
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.
R is the father of Q
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