Question 7
Cecilia, Dina, Elena, and Fiona are cousins with different ages who live in the same house. When a new neighbor asked them who is the oldest, they answered:
Cecilia: I am the eldest.
Dina: I am not the youngest.
Elena: I am neither the eldest nor the youngest.
Fiona: I am the youngest.
Given that one of them is not telling the truth, who is the oldest of the four cousins?
Cecilia: I am the eldest.
Dina: I am not the youngest.
Elena: I am neither the eldest nor the youngest.
Fiona: I am the youngest.
Given that one of them is not telling the truth, who is the oldest of the four cousins?