Good Riddles

Question: i can fill up the entire room and still not take up any space. Who am i?

Question: i am boiling hot and freezing col at the same time what am i?

Question: It flies, it walks, it runs on land, It takes, it gives, but without hands, It carries and delights, Falls and frights. Normally a creature of white it is. What is it?

Question: What is 50% divided by 2?

Question: A man with a stick walks up to another man. Why?