If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?
You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?
You knock a Table over in the library, and suddenly 20 eyes are looking at you.
I can sizzle like bacon,
I am made with an egg,
I have plenty of backbone, but lack a good leg,
I peel layers like onions, but still remain whole,
I can be long, like a flagpole, yet fit in a hole.
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?
A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?
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 I get multiplied by any number, the sum of the figures in the product is always me. What am I?
If eleven plus two equals one, what does nine plus five equal?
Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.
How many frogs are there on the log at this moment?
What is the Surname of Barbie Doll?
In 2007, a puzzle was released and $2 million prizes were offered for the first complete solution. The competition ended at noon on 31 December 2010, with no solution being found. Wiki
