Civil Service Exam Reviewer · Logical Reasoning · medium
One of four barangay tanods left the gate of the barangay hall unlocked. When the captain asked, each one made a statement: • Ana: "It was either Joy or Leo." • Gino: "Leo did it." • Joy: "Leo did not do it." • Leo: "It was either Ana or me." Only one of them is lying. Who is responsible?
- Ana
- Gino
- Leo
- Joy
Answer
C. Leo
Solution
Test each person as the one responsible and count the true statements: if Ana did it, 2 statements are true; if Gino did it, 1 statement is true; if Joy did it, 2 statements are true; if Leo did it, 3 statements are true. Only when Leo did it is exactly one statement false, so Leo is responsible.
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