If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?
Find the next number in the series 12, 20, 40, 72, 116, 172 ?
Can it be possible to build a house that has all its four walls facing towards the South?
What happened when the wheel was invented?
If six children and two dogs were under an umbrella, how come none of them got wet?
What word is represented by this rebus?
When can we add 2 to 11 and get 1 as the correct answer?
I am a type of room you cannot enter or leave. Raised from the ground below, I could be poisonous or a delicious treat. What am I?
How many letters are in the alphabet?
If eleven plus two equals one, what does nine plus five equal?
Can you name any English verb that becomes its past tense by simply rearranging the alphabets ?
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
