Kids Riddles

Question: Does a ton of feathers or a ton of bricks weigh more?

Question: What is bought by the yard by is worn by the foot?

Question: What is it that after you take away the whole, some still remains?

Question: What's the difference between a well-dressed man on a bicycle and a poorly-dressed man on a tricycle?

Question: At night they come without being fetched, and by day they are lost without being stolen.

What are they?