A Liar's WeaknessComputer Science Level 2
Jerry likes to lie, he lies every day of the week except for one day. One day, he said "I lie on Mondays and Tuesdays." The following day, he said "Today is one of the following days, Sunday, Saturday, or Thursday". On the next day he said "I only lie on Fridays and Wednesdays!". On what day he's telling the truth?