What is the coolest letter in the alphabet?
What is the centre of gravity?
The following alphametic has only one solution. Can you find it? ENLIST + SILENT + LISTEN = ANAGRAM PS: You may start the number from 0.
I am never scared but became petrified and can’t live in a house but would die to make one. What am I?
How is the moon similar to a dollar?
What building has the most stories?
If two's company, and three's a crowd, then whats four and five ?
Where do you go to learn how to make ice cream?
What is both possible and impossible at the same time?
how come the second man dies?
Rearrange the letters in "new door" to make one word.
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