In a family of eight members A,B,C,D,E,F,G and H, having three generation, are sitting around a rectangular table in such a way that four of them sit at four corners, who are facing towards center, and rest four, who sits at the middle of the side, are facing outside.
F who is the granddaughter of B, is sitting on one of the middle side. A is the mother of G, who is sitting `3^(rd)` to the left of D, who is brother-in-law of G. E is not an immediate neighbor of G. C sits immediate right of his sister-in-law. A is sitting at the corner. E who is mother of F is sitting opposite to his mother in law and is not facing outside. B has three children in which, he has only one daughter, who is not married and B is facing outside. C is the unmarried brother of G whose father is sitting to the immediate right of G. Brothers of H is not the immediate neighbor of D. D is not the father of F. G sits immediate left of C. A is wife of B and G is brother of H.
Who is the father in law of E?

Options

A. A
B. H
C. B
D. Can't be determined

Answer

C

Explanation

From the given definite conditions: - F, who is the granddaughter of B. E who is mother of F. B has three children in which, he has only one daughter, who is not married. A is the mother of G, who is sitting 3rd to the left of D, who is brother-in-law of G. A is wife of B and G is brother of H. D is not the father of F.C is the unmarried brother of G. E is not an immediate neighbor of G. From this we can conclude the relation between E, F, B, G, H, A, C and D. So there will be two possible cases of sitting arrangement as D sits either on the middle or at the corner of the square.

(Blood relations are deduced from the above given information)
Step 2: Now it is given that E who is mother of F is sittingopposite to his mother in law and not facing outside and as E faces the centre and sits at the corner opposite to A (mother-in-law of E). G.sits immediate left of C. C is the unmarried brother of G whose father is sitting to the immediate right of G. Brother of H is not the immediate neighbor of D. C sits immediate right of his sister-in-law (E). F is seating on one of the middle side.

Note: In case 2, it is given that E is facing the centre and C sits immediate right of E (sister-in-law) but as E faces the centre and sits opposite to A, hence case 2 will be eliminated.
So we will get our final solution of blood relation and sitting arrangement of eight members of the family.