A group of campers have been on vacation so long, that they've forgotten the day of the week. The following conversation ensues.
Darryl: "What's the day? I dont think it is Thursday, Friday or Saturday."
Tracy: "Well that doesn't narrow it down much. Yesterday was Sunday."
Melissa: "Yesterday wasn't Sunday, tomorrow is Sunday."
Ben: "The day after tomorrow is Saturday."
Adrienne: "The day before yesterday was Thursday."
Susie: "Tomorrow is Saturday."
David: "I know that the day after tomorrow is not Friday."
If only one person's statement is true, what day of the week is it?
An American, who had never been to any country other than the United States, travelled a long way to see a sight that very few people had seen. He was standing one day on solid ground when he saw the Great Wall of China with his own eyes. How come?
He was an astronaut standing on the moon - from where the Great Wall of China is visible.