Brain Teaser Riddles

Which is heavier? A pound of feather or a pound of rocks?

Give me food, and I will live; give me water, and I will die. What am I?

The more you take the more you leave behind. What am I?

What has a head, a tail, is brown, and has no legs?

How many 9's are there between 1 and 100?

David's Father Has Three Sons: Snap, Crackle, and _____

What is the answer?

What goes up but never comes down?

What is heavier 100kg of gold or 100 kg of feathers?

What is at the end of rainbow?