81 x 9 = 801. What must you do to make the this equation true?
If your uncle’s sister is not your aunt, what relation is she to you?
John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?
Can you make four (4) nines (9) equal 100?
It's a test that will check your IQ. Suppose you have one 11 minute hourglass and one 13 minute hourglass. Can you measure exactly fifteen minutes using them ?
There are five vowels (a, e, i, o, u) in the English language. Can you tell us a word that contains all these vowels?
John and Jacob are twin brothers. One of them is a liar whereas the other one is a truth-teller. I called their home number and one of them picked up. I asked. 'Does John lie?' The person replied with a yes. Whom did I talk with, John or Jacob?
You can hear me, but you can't touch or see me. What am I?
What is the value of 1/2 of 2/3 of 3/4 of 4/5 of 5/6 of 6/7 of 7/8 of 8/9 of 9/10 of 1000?
A guy in his thirties is found dead in a forest. The shocking thing about the body is that he is wearing his swimming trunks snorkel and a facemask. For your information, the nearest lake is some 10 miles away and the sea is hundreds of miles away. How did he die then?
What number comes next in this sequence: 7 8 5 5 3 4 4 _
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
