Question

What is the profession of $B$ ?

• A. Teacher
• B. Doctor
• C. Lawyer
• D. Cannot be determined

Answer 1

Answer: (B)

Doctor

Clearly, $B$ is the Doctor.
$C$ 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 son of $B$ and $C$. $E$ is the unmarried Engineer. So, the other married couple can be that of grandmother of $F$ i.e. $A$ and $D$. 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.