Best hard riddles for teens

What has five fingers but is not alive?

What has six faces, but does not wear makeup. It also has twenty-one eyes, but cannot see?

You see a boat filled with people. It has not sunk, but when you look again you don't see a single person on the boat. Why?

I am a vehicle. I spell the same when you read me forwards as well as backwards. What Am I?

What tastes better than it smells?

What did the banana do when it heard the ice scream?

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

What is unusual about the following words: revive, banana, grammar, voodoo, assess, potato, dresser, uneven?

Brothers, all pair up; Bodies firm and tall. You only care to eat the solid food, And don’t care to eat the soup.

A farmer lived in a small village. He had three sons. One day he gave $100 dollars to his sons and told them to go to market. The three sons should buy 100 animals for $100 dollars. In the market there were chickens, hens and goats. Cost of a goat is $10, cost of a hen is $5 and cost of a chicken is $0.50. There should be at least one animal from each group. The farmer’s sons should spend all the money on buying animals. There should be 100 animals, not a single animal more or less! What do the sons buy?