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: How can you take 9 away from 8?

Question: there was a two storeyed building.one the second floor was standing a father.on the first floor was standing his son.and in the ground floor was standing a lady.what does the son say to father if he has to say a lady is standing down in one word.

Question: You're in a VERY dark room. You enter it, and immediately everything you see dissolves into darkness... But suddenly, you see the faintest red light. You COMPLETELY close and cover an eye, but You can still see the red light. How is this possible?

Question: What exponents other than the same two numbers with the numbers one thru ten can be flipped and have the same answer?