If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten. How is this possible?
What does the following BrainBat signifies? ABCDEFGHIJKLMNOPQRSTUVWYZ QQQQQQQQQQQQQQQQQQQQQQQQQ.
2, 3, 5, 9, 17, _ What is the next number in the sequence?
If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?
If EELS + MARK + BEST + WARY = EASY What does HELP + BARK + WARD + LEAD equal?
Which is the smallest number that you can write using all the vowels exactly once?
The first box has two white balls. The second box has two black balls. The third box has a white and a black ball. Boxes are labeled but all labels are wrong! You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball. How many such operations are necessary to correctly label the boxes?
Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water. How many frogs are there on the log at this moment?
A shepherd had 18 sheep, out of which, all but ten died. Can you tell us how many sheep was he left with?
Things are just as they seem, right? Well, check again. Can you count the number of tigers in this picture ?
If a boy blows 18 bubbles, Then pops 6 eats 7 and then He pops 5 and blows 1. How many are left?
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
