Amy, Betty, Carl, and Dan went to a four-story department store in New York City for some Labor Day shopping. Each did their shopping on a different floor, and each bought a different thing.
One person each bought an iPod, a digital camera, a book, and a lawnmower.
Amy did not buy a lawnmower.
Carl shopped on the second floor.
Betty bought a digital camera.
Amy shopped on the first floor.
iPods are sold on the fourth floor.
What did each person buy?