Good Riddles

Question: If 2=8, 3=27, 4=64, and 6=216, what does 9 equal?

Question: What is gray, has four legs, a tail, and a trunk?

Question: How do Eskimos make their beds?

Question: Where do baby ghosts go during the day?

Question: I'm above your head every where you go and i'm blue. What am I?