Question

A, B, C, D, E, F and G are members of a family consisting of four adults & three children, two of whom F and G are girls.
(J) A and D are brothers and A is a doctor.
(K) E is an engineer married to one of the brothers and has two children.
(L) B is married to D and G is their child.
Who is C?

• A. A and E's son
• B. B and D's son
• C. A and E's daughter
• D. B and D's daughter

Hint:

Always separate the information into "Adults" and "Children" lists. By identifying that the adults are completely accounted for by the two married couples (A-E and D-B), you can quickly focus on assigning the remaining children (C, F, G) to their respective parents.

Answer 1

The Correct Option is A

Step 1: Count the people.
Seven members: four adults and three children. F and G are girls, so the third child is a boy.
Step 2: Use clue (J).
A and D are brothers, both male adults; A is a doctor.
Step 3: Use clue (L).
B is married to D, and G is their child, so (D,B) is one couple.
Step 4: Form the second couple.
The other brother A must be married to E, the engineer, giving couple (A,E). That accounts for all four adults.
Step 5: Place the children.
E has two children; G already belongs to (D,B). So the remaining children C and F belong to (A,E).
Step 6: Fix C's gender.
F and G are the two girls, so C is the boy, the son of A and E.
\[ \boxed{\text{A and E's son}} \]