Good Riddles

Question: If 1+9+8=1, what is 2+8+9?

Question: sometimes i hang, sometimes im crusty, sometimes im bloody, and yellow. What am i?

Question: What does it mean when you're reading a fortune?

Question: How can you add 9 to become 6? (No subtracting).

Question: I break down buildings I crumble mountains You can't see me What am I?