Question 17
Amy, Bob, Chris and Doris are each either a truth-teller, who always tells the truth, or a liar, who always lies. Amy says, “Exactly one of us is a liar.” Bob says, “Exactly two of us are liars.” Chris says, “Exactly three of us are liars.” Doris says, “All of us are liars.” At least one statement is true. Determine the type of each person. Enter four letters in the order Amy, Bob, Chris, Doris: T for truth-teller and L for liar, with commas.
