Alice, Bob and Charlie are one of each type:
- a truth teller (always tells the truth)
- a liar (always lies)
- and a spy (can lie or tell the truth)
They make the following statements:
Alice: I am not a truth teller.
Bob: I am not a spy.
Charlie: I am not a liar.
What type is Charlie?
- Truth teller
- Liar
- Spy
- There is not enough information