I have an eye but still cannot see.

Who am I?

What is more useful when it is broken?

How many letters are in the alphabet?

A man started to town with a fox, a goose, and a sack of corn. He came to a stream which he had to cross in a tiny boat. He could only take one across at a time. He could not leave the fox alone with the goose or the goose alone with the corn. How did he get them all safely over the stream?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

There are four 3-link chains. All you have to do is join them into a big 12-link chain. For joining two closed links, one of the links must be cut and placed onto the other link for closing.

How many minimum links will you have to cut to make the big chain?

Can you find the missing piece of the Porsche?

What breaks yet never falls, and what falls yet never breaks?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

How can you write nineteen in a manner that if we take out one, it becomes twenty?