I have a clock(12-hour format) and both the needles of the clock overlap at 12:00. After how much time, they will overlap again?
Riddle me this, Riddle me that, What am I? I am made of wood, but you can't see me down?
I am a white box having no key or lid. Yet there is a golden treasure inside it. What Am I?
I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?
If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?
My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?
Can you count the chocolates in hand?
Begin with a word, five letters to my name, Remove the first and last but I am the same Take out my middle and still, I remain. What word am I?
I know a nine-letter word having only one vowel. Do you ?
If eleven plus two equals one, what does nine plus five equal?
During which month do people sleep the least?
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
