If eleven plus two equals one, what does nine plus five equal?
Find the hidden panda in the image below.
I have eight fingers and two thumbs but I do not live. What Am I?
When it is alive we sing, when it is dead we clap our hands. What is it?
Twice ten are six of us, Six are but three of us, Nine are but four of us; What can we possibly be? Would you know more of us? Twelve are but six of us, Five are but four, do you see? What are we?
What begins with T, ends with T, and has T in it?
What demands an answer, but asks no questions
I start and end with 500 and carry a 5 in my heart. But I require the first letter and the first number to be complete. I am the name of a King. Who am I ?
I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?
What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?
What is the longest word in the dictionary?
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