A family has seven members: A, B, C, D, E, F and G. A is the husband of B. C and D are the only two children of A and B. E is the wife of C. G is the son of E and the only grandchild of B. F is the husband of D.
Which of the following statements are correct?
(A) F is the brother-in-law of C.
(B) B is the maternal grandmother of G.
(C) A is the paternal grandfather of G.
(D) E is the sister of D.
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → (A) and (C) only
G’s mother is given. G’s father comes from “the only grandchild of B”: one parent of G must be a child of B.
A is the husband of B, and C and D are their only two children
E is the wife of C, so C is a male; F is the husband of D, so D is a female: C and D are brother and sister
G is the son of E, and G is a grandchild of B, so one of G’s parents is a child of B: C or D
G’s mother is E, who is the wife of C and not a child of B, so G’s father must be the child of B; D is a female, so G’s father is C
So A and B are the parents of G’s father C
Checking the statements
(A) F is the brother-in-law of C — Correct. F is the husband of D, the sister of C, so F is C’s brother-in-law.
(B) B is the maternal grandmother of G — Incorrect. B is the mother of G’s father C, so she is G’s paternal (not maternal) grandmother.
(C) A is the paternal grandfather of G — Correct. A is the father of G’s father C.
(D) E is the sister of D — Incorrect. E is the wife of D’s brother C, so E is D’s sister-in-law, not her sister.
So only statements (A) and (C) are correct.