Susie’s and Sally’s last names are Billingsley and Jenkins, but not necessarily in that order. Two of the following statements are false. What is the real name of each person?
- Susie’s last name is Billingsley.
- Susie’s last name is Jenkins.
- Sally’s last name is Jenkins.
Answer
Sally Billingsley and Susie Jenkins are the real names. Because one of the first two statements had to be false, the third statement also had to be false.
The first and third statements are false and the second statement is true.