Duplicate of Riddles and Brain Teasers

What can travel around the world while staying in a corner?

What is black when you buy it, red when you use it, and gray when you throw it away?

What room do ghosts avoid?

What kind of room has no doors or windows?

What comes down but never goes up?

I'm tall when I’m young and I’m short when I’m old. What am I?

What is more useful when it is broken?

How many months have 28 days?

What has hands but can not clap?

What is always coming but never arrives?