Sunday 21 February 2010

LATERAL THINKING ON MARS


x
This was astronaut Jose Perez's fourth visit to Mars and he had learned to speak Martian. He wanted to find his Martian friend Doman, but in order to locate him he had to know what group Doman belonged to.

The three groups in the area were: Uti, Yomi, and Grundi.

The Uti always told the truth.

The Yomi always lied.

The Grundi sometimes told the truth but sometimes lied.

Perez needed information. Three Martians, Aken, Bal and Cwos, each of whom belonged to a different group, agreed to help him. He asked each one of them two questions:

What group do you belong to?

What group does Doman belong to?

1. Aken said: I am not a Uti. Doman is a Yomi.
2. Bal said: I am not a Yomi. Doman is a Grundi.
3. Cwos said: I am not a Grundi. Doman is a Uti.

What group does Doman belong to?

No comments:

Post a Comment