One of Mr. X, his wife, their son and Mr. X's mother is an Engineer and another is a Doctor.
1. If the Doctor is a male, then the Engineer is a male.
2. If the Engineer is younger than the Doctor, then the Engineer and the Doctor are not blood relatives.
3. If the Engineer is a female, then she and the Doctor are blood relatives.
Can you tell who is the Doctor and the Engineer?

(In reply to I have real solution!!! by paul)

But statement 2 says that If the Engineer is younger than the Doctor (which would be the case in your solution), then the Engineer and the Doctor are not blood relatives (but they would be blood relatives in your solution).

Posted by Charlie on 2003-08-26 08:53:15