You can see it everyday, But cannot touch it at will. What is it?
If nine thousand, nine hundred nine dollars is written as $9,909, how should twelve thousand, twelve hundred twelve dollars be written?
If Rajina's daughter is my daughter's mom, who am I to Rajina?
The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?
What will you call your mother's brother's brother-in-law?
What is always in front of you but can’t be seen?
What can you catch but never throw?
What 4-letter word can be written forward, backward or upside down, and can still be read from left to right?
It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?
What goes up but never comes down?
A man in a car saw a Golden Door, Silver Door and a Bronze Door. What door did he open first?
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