What Am I Riddles

Question: I have 6 faces and 21 eyes, but can't see a thing. What am I?

Question: What is it that can get served but can't get eaten?

Question: I'm one. but I can overcome ten with one swing and a spin . What am I?

Question: What beats but inflicts no pain?

Question: I move around yet one side is hidden while another is shining. I can be seen full but only sometimes. What am I?