Answer:
I run smoother than any rhyme I love to fall but cannot climb.
I have thirteen hearts but no body or soul.
Face with a tree skin like the sea. A great beast I am. Yet vermin frightens me.
I have numbers on my face but can't find 13 any place. What am I?
I can fly but I have no wings. I can cry but I have no eyes. Wherever I go, darkness follows me. What am I?
How can you add eight 6s together so that the total adds up to 750?