1. Bob tells the truth on only one day of the week.
2. One day he said: "I lie on Mondays and Tuesdays."
3. The next day he said: "Today is either Thursday, Saturday, or Sunday."
4. The next day he said: "I lie on Wednesdays and Fridays."

On which day of the week does Bob tell the truth?

Yes charlie i see you got the answer now and i realize my mistake but this was caused by my thinking that mondays AND tuesdays meant that both must be included so if it was a lie he therefore must tell the truth on both monday and tuesday. I see the mistake I made, although i believe it should say monday or tuesdays.

Posted by Alan on 2003-03-17 10:41:40