Answer:
How many bricks does it take to complete a building made of brick?
It's in your hand though you cannot feel it. Only you and time can reveal it.
Besides Paris, what is the capital of France?
What get's more wet while it dries?
Cold head and feet; Round as a ball; Always turning around itself.
Black we are and much admired. Many seek us if they are tired. We tire the horse, and comfort man, and turn White when we've fulfilled your plan.