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?

Father is the engineer and the son is the doctor.

You can eliminate many of the scenarios using the "if the doctor is male, the engineer is male" premise. List the five scenarios and the only one that does not violate any rules is the father as engineer and son as doctor.

Posted by richard on 2003-08-27 14:44:52