Who was the murderer

Question

There was a murder in the home of a married couple, their son and daughter. One of these 4 people murdered one of the others.

One of the members of the family witnessed the crime.

The other one helped the murderer.

These are the things we know for sure:

1)     The witness and the one who helped the murderer were not of the same gender.

2)     The oldest person and the witness were not of the same gender.

3)     The youngest person and the victim were not of the same gender.

4)     The one who helped the murderer was older than the victim.

5)     The father was the oldest member of the family.

6)     The murderer was not the youngest member of the family.

Who was the murderer?

witness(mother or daughter)
one who helped the murderer (father or son)

youngest(daughter)
victim(father)

youngest(son)
victim(mother)
witness(daughter)
one who helped the murderer(father)

原文地址:https://www.cnblogs.com/ganting/p/4500483.html