How many triangles are there on the puzzle below?
What is always in front of you but can’t be seen?
If, 9 * 8 * 7 = 65 8 * 7 * 6 = 50 7 * 6 * 5 = 37 Find 6 * 5 * 4 = ?
Railroad Crossing, look out for the cars. Can you spell that, without any R's ?
There is a number which when you multiply by 3 and subtract 2 from the result, then the resulting number is the reverse of the actual number. What is the smallest number that stands true on the statement?
Why did the Girl throw the butter out of the window?
What occurs twice in a week, once in a year but never in a day?
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?
I don't get anymore wetter, no matter how much rain falls on me.
You have two buckets of 11 liters and 6 litres. How can you measure exactly 8 litres?
At my favorite fruit stand, an orange costs 18, a pineapple costs 27, and a grape costs 15. Using the same logic, can you tell how much a mango costs?
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