Good Riddles

Question: I don't have eyes, but once I did see. Once I had thoughts, but now I'm white and empty. What am i?

Question: What looks the same like half an apple?

Question: How can you take 9 away from 8?

Question: Farrah has two brothers. The first brother is called feather one and his second brother is named feather two. What is his name?

Question: A man entered a house. There was no one else in the house. He walked in to a room, stopped, and slowly raised his hands above his head. After a moment, he turned around, let out a laugh, and left. Why?