What is in the middle of nowhere?

Before Mount Everest was discovered, what was the highest mountain in the world?

All my ties are red except two. All my ties are blue except two. All my ties are brown except two. How many ties do I have?

A man recently bought two aeroplanes, but afterwards found that they would not answer the purpose for which he wanted them. So he sold them for $600 each, making a loss of 20 per cent on one machine and a profit of 20 per cent on the other. Did he make a profit on the whole transaction, or a loss? And how much?

What is half of 2+2?

How can half of 12 be 7?

Why do chickens lay eggs?

What paper makes you itch?

What has roads but no cars?

What has 6 wheels and flies?

What has 4 eyes but cannot see?

What do you need to open a door?

What goes up but never comes down?

What jumps higher than a building?

A half is a third of it. What is it?