In a group of five persons A, B, C, D and E, there is a professor, a doctor and lawyer. A and D are unmarried ladies, and do not work. Of a married couple in the Group, E is the husband. B is the brother of A and is neither a doctor nor a lawyer. Who is the professor? 

In a group of five persons A, B, C, D and E, there is a professor, a doctor and lawyer. A and D are unmarried ladies, and do not work. Of a married couple in the Group, E is the husband. B is the brother of A and is neither a doctor nor a lawyer. Who is the professor?  Correct Answer B

Given:

Group of 5 persons: A, B, C, D and E.

1) 'A' and 'D' are unmarried ladies and do no work.

2)  Of a married couple in the Group, E is the husband. B is the brother of A and is neither a doctor nor a lawyer.

From Statement (1) as 'A' and 'D' do not work so B, C, E could be professor but from the statement (2) it is given that 'B' is neither a doctor nor a lawyer that means B is professor as only 3 professions are only given.

Hence, "B" is the correct answer.