Before Mount Everest was discovered, what was the highest mountain in the world?
Can you solve this picture maths equation?
My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?
A wooden log balances equally on the scales when weighed with three-quarters of a pound and three-quarters of a wooden log. Can you calculate the weight of the entire wooden log?
Three ants are going up a hill, one behind the other. The last ant then says to the other ants, 'There is an ant behind me!'' How come?
What word begins and ends with an E, but has only one letter?
If, A = 1 B = 2 C = 3 ... ... Z = 26. Based on above rule, you need to find an eleven letter word whose letter sum is equal to 52.
You knock a Table over in the library, and suddenly 20 eyes are looking at you.
I am white when I am dirty, and black when I am clean. What am I?
How can you write nineteen in a manner that if we take out one, it becomes twenty?
I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?
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
