Long Riddles and Answers

Question: A man was sitting on his couch and searching for the English Channel.

How did he find it?

Question: If it takes three men two days to dig a hole, how long does it take one man to dig half of a hole?

Question: There's a place in the world where the wind blows south then suddenly north.

Where is it?

Question: I'm red, blue, purple and green.
No one can reach me, not even the queen.

What am I?

Question: You're in a room with no doors or windows. Just a mirror and a table.

How do you get out?