Logic Riddles

Question: A woman was reading in the basement when her husband, thinking the basement was empty, turned off the light. The woman continued reading. There were no lamps or flashlights and the light her husband turned off didn't come back on. How was the woman able to read?

Question: Fifty is my first, my second is the third in fourth, and my end is the end of an ending. With a nut I become a nut that isn't, and without one I move.

Question: The sky is blue, the sea is green. The answer never ends in-between.

Question: Imagine that you're in a dark room where there is nothing except a drinking cup. There is a door out of the room but it is locked with 50 locks on the outside. There are guards pointing guns at the door so if you try to escape you will die. How do you get out of the room?

Question: Farrah left her key under the mat and when she came back she lost it.The painter said he painted the wall ,the security said she didn't know, annd the janitor said he cleaned the floor. Who took the key?