Good Riddles

Question: Tear one off and scratch my head. What once was red is black instead. What am I?

Question: What occurs once in a minute, twice in a moment and never in one thousand years?

Question: There are 1600 people sitting around a circular table. The first person (person 1) has a sword and kills the second person then hands it to the next alive person (in this case person 3). Person 3 stabs person 4 and gives the sword to person 5. This goes on until person 1499 kills person 1500. Then person 1 kills person 3 and so on. This is repeated until there is only a single person remaining.

Who remains in the end?

Question: What always eats but is always hungry?

Question: What does a TV stand for?