Good Riddles

Question: I am as thin as paper, smaller than string. I blow in the wind. What am I?

Question: There are three jars full of equal amounts quarters, dimes, and penny's. Which one has the highest value?

Question: Feathers, I am as light,
But quite heavy if squeezed tight.
I'm seen as clean and pure,
but often talked about with dirty terms.
What am I?

Question: What has one foot but not a single leg?

Question: If you are smart and very good at math. Answer these 2 math riddles. 1. What is 0x29840847894657867478465875674896478496478567968. 2. 1x89498784893246798648732742974823.