Question 23
Exactly one of Alek, Bartek, Czarek, Darek, Edek ate a cookie. Alek says, “I have not eaten a cookie.” Bartek says, “I have eaten a cookie.” Czarek says, “Edek has not eaten a cookie.” Darek says, “I have not eaten a cookie.” Edek says, “Alek has eaten a cookie.” Only one child lies. Who ate the cookie?