Five roommates—Alice, Ben, Claire, David, and Emma—live together in a shared apartment. One morning, they discover that the apartment keys are missing. Each roommate recalls their actions the previous night:
Alice remembers leaving her keys on the kitchen counter before going to bed.
Ben recalls placing his keys on the living room table.
Claire remembers hanging her keys on the key rack by the door.
David recalls putting his keys in his jacket pocket, which he hung in the hallway closet.
Emma remembers leaving her keys in her bedroom on the nightstand.
Can you determine who misplaced the apartment keys?
Solution:
By examining each roommate's account:
Alice couldn't have misplaced the keys, as she left them on the kitchen counter.
Ben couldn't have misplaced the keys, as he left them on the living room table.
Claire couldn't have misplaced the keys, as she hung them on the key rack by the door.
David is a suspect because he put his keys in his jacket pocket, which was hung in the hallway closet. It's possible the keys fell out of his pocket.
Emma couldn't have misplaced the keys, as she left them in her bedroom on the nightstand.
Since David's actions involve placing the keys in a potentially insecure location, he's the one responsible for misplacing the apartment keys.
