There was a very young princess who was very beautiful. Her father thought it was time for her to marry. He held a series of competitions. All of the men dropped out, but one, a peasant. The King was very unhappy about this and he wanted to make sure the peasant could not marry his daughter. He placed 100 roses in a room. Only one rose was from their garden. The rest were fakes. They all looked and smelled the same. It was impossible to tell them apart. The peasant was very wise though, and picked out the correct rose. How did he do it?